The Supreme Court heard two same-sex marriage cases this week. We look at the similarities and differences between these cases and the shift in  public opinion on same-sex marriage.  Also, Obama urges Congress to pass gun legislation. Joining Doyle McManus of the Los Angeles Times: Joan Biskupic, Reuters; Pete Williams, NBC News; John Harwood, CNBC and New York Times; Dan Balz, Washington Post.

The Senate voted to begin debating legislation to curb gun violence. Also, Obama’s $3.8 trillion budget plan that rankled both Republicans and Democrats. Plus, the political calculation behind the president’s outreach to conservatives. Joining Gwen: Ed O’Keefe, Washington Post; John Harwood CNBC and New York Times; John Dickerson, Slate Magazine & CBS News; Alexis Simendinger, Real Clear Politics

In a week that stunned the nation, we look at the attack on the Boston Marathon and the suspect manhunt that has consumed the city of Boston. Also, we look at the politics behind the “shameful” defeat of gun control legislation. Plus, how do leaders respond to uncertain times. Joining Gwen: Tom Gjelten, NPR; Peter Baker, New York Times; Jeff Zeleny, ABC News; Karen Tumulty, Washington Post.