By Glen Johnson, Globe Staff

Elizabeth Warren, trying to ride her reputation as a Wall Street enforcer to the US Senate, today released a new radio ad calling for enhanced government regulation in the aftermath of JPMorgan Chase’s $2 billion trading loss. “I stood up to big banks. I took on their army of lobbyists and help win the fight for a consumer protection agency,” the Democrat says in the new spot. “Wall Street isn’t going to change its ways until Washington gets serious.”

By Noah Bierman, Globe Staff

Senate candidate Elizabeth Warren today called on JPMorgan Chase chief executive officer Jamie Dimon to resign from New York Federal Reserve Bank board after his company’s $2 billion trading loss. Three top traders at the firm are being replaced today. Warren spoke with CNN and CBS about the latest Wall Street crisis, calling it a symptom of a destructive attitude. She said that banks should get back in the business of old fashioned banking, rather than the complex business transactions.

By Bobby Caina Calvan, Globe Staff

Representative Barney Frank, who cowrote the landmark law designed to reform how Wall Street does business, said the massive losses disclosed Thursday by banking giant JPMorgan is proof that regulation of the country’s financial institutions. “The argument that financial institutions do not need the new rules to help them avoid the irresponsible actions that led to the crisis of 2008 is at least $2 billion harder to make today,” Frank said today.

By Bryan Bender, Globe Staff

WASHINGTON _ A provision adopted this week as part of a pending defense spending bill would prevent the Air Force from making any cuts to the Electronic Systems Center at Hanscom Air Force Base without prior approval from Congress. The directive is being hailed by Bay State officials and business leaders who worry that recent downsizing plans would harm the military’s ability to field cutting-edge technologies and strike a blow to the Massachusetts economy.

By Bobby Caina Calvan, Globe Staff

A day after President Obama made a historic announcement in support of gay marriage, 17 members of the US Senate, including Senator John Kerry of Massachusetts, urged the White House to defer enforcement of immigration restrictions on immigrants who risk deportation because of their same-sex marriages. In a letter sent today to the US Attorney General and the Secretary of Homeland Security, the senators said they were troubled that some that some immigration field offices “are apparently following a blanket policy to deny green card applications for all gay spouses.”

By Bobby Caina Calvan , Globe Staff

A proposal by Senator Scott Brown to pay for college loan subsidies by recovering improperly dispersed government funds may fall far short of raising the necessary $6 billion to extend the subsidies, according to the Congressional Budget Office. While the CBO has yet to analyze Brown’s proposal, its analysis last fall of similar legislation shows that reducing payment mistakes would recover only “several million dollars.”

By Glen Johnson, Globe Staff

The Massachusetts Democratic Party today filed a complaint with the Senate Ethics Committee, arguing that Senator Scott Brown abused public resources by using video shot by a government employee to promote his reelection campaign. The Globe reported last week that the video - of Brown sinking a half-court basketball shot - was recorded by his Senate communications director, during an official event, and after that employee had flown to Massachusetts on an airline ticket bought by the taxpayers.

By Glen Johnson, Globe Staff

Senator Scott Brown today is starting to air the first television ad of his reelection campaign, and it focuses on a theme he pounded across the state last week: his political independence. In the 30-second spot, which will air in the Boston, Springfield, Providence, R.I., and Albany, N.Y., markets, features clips from his 2010 victory speech, a “60 Minutes” report about him, and Brown addressing students about his life. “We have more work to do,” Brown says

By Glen Johnson, Globe Staff

Richard Lugar’s loss in his Indiana Republican primary on Tuesday gave Senator John Kerry the chance to move up at least a slot in US Senate seniority. It also prompted the Massachusetts Democrat to vent anew against what he sees as increasing polarization in American politics. Lugar, who was the top Republican on the Senate Foreign Relations Committee after serving in the chamber since 1977, lost to state Treasurer Richard Mourdock, who had been backed by a Tea Party constituency.

By Glen Johnson, Globe Staff

The Massachusetts Republican Party today tweaked Democratic congressional candidate Joseph P. Kennedy III, after he deleted an online note to constituents that gave the first outline of his views on various political issues. A Kennedy spokeswoman noted that the note had been replaced with a more robust “Where I Stand” section on the campaign’s website. The exchange underscores GOP suggestions that Kennedy is a celebrity candidate, running on his famed political family’s name rather than his achievements or policy stances.

By Noah Bierman, Globe Staff

The so-called “People’s Pledge” limiting the influence of outside interest groups in the Massachusetts US Senate election may be spreading. Today, US Representative John Tierney, a Salem Democrat, challenged Republican Richard Tisei to sign “the exact same ‘People’s Pledge’” for their race. Tierney’s letter comes as he and Tisei, a former state senator from Wakefield and candidate for lieutenant governor, are engaged in what may be the state’s most competitive US House race.

By Noah Bierman, Globe Staff

Fall River dentist David Steinhof plans to file his intent to run today as a Republican for election the Fourth Congressional District, the seat that will be open as a result of Barney Frank’s retirement, Steinhof’s campaign manager said. The Republican primary field already includes Dr. Elizabeth Childs and Sean Bielat, who built his profile by challenging Frank for reelection in 2010. Democrats in the field include Joseph Kennedy III, Herb Robinson, Paul Heroux, and Jules Levine.

By Bobby Caina Calvan, Globe Staff

Concerned about the privacy of the millions of Americans who use cellphones, Representative Edward Markey asked the country’s largest wireless telecommunications companies to reveal the extent in which they cooperate with police departments seeking mobile phone information. The Malden Democrat dispatched letters to nine companies seeking to understand the policies and guidelines the companies use in deciding whether to release information -- sometimes for profit -- to law enforcement agencies.

By Glen Johnson, Globe Staff

Senator Scott Brown said today that “it’s sad” for rival Elizabeth Warren to criticize his decision to continue insuring one of his daughters through the Obama administration health care law that he has opposed and tried to repeal. “For her to call me a hypocrite as to how Gail and I provide for our family, it’s sad,” Brown said. Warren, Brown’s likely Democratic challenger this fall, never personally applied that label to the senator. But her campaign spokeswoman did Monday.

By Glen Johnson, Globe Staff

Senator Scott Brown is planning to deliver a speech this afternoon on bipartisanship that is titled, “Americans First,” but he previewed his thoughts earlier this week during remarks to a pro-business trade group. Speaking Monday to The New England Council, the Massachusetts Republican not only differentiated himself from the Democrats comprising the rest of the state’s congressional delegation, but many of his colleagues in Congress and his likely reelection opponent this fall, Democrat Elizabeth Warren.

By Glen Johnson, Globe Staff

Democratic Senate candidate Elizabeth Warren is using the words of President Obama to make the case that she can get action in Washington. In a new television ad set to start airing statewide tonight, the president is seen in the Rose Garden lauding Warren’s work to establish the Consumer Financial Protection Bureau. “She came up with an idea for a new, independent agency that would have one simple, overriding mission: standing up for consumers and middle-class families,” Obama says.

By Glen Johnson, Globe Staff

Democrat Elizabeth Warren said today “it is wrong” that Senator Scott Brown has voted to block and repeal President Obama’s health care overhaul when he continues to insure his nearly 24-year-old daughter through an extended-coverage provision in the law. “He is using that same health care reform act to make sure that his adult daughter gets covered on his health insurance policy – at the same moment that he wants to repeal it for everyone else,” Warren said.