Gov. Gary R. Herbert recently signed four immigration bills that bring sweeping changes to his state's laws. Here, Herbert speaks after his inauguration in January. Scott Sommerdorf/AP hide caption

itoggle caption Scott Sommerdorf/AP

Indiana Gov Mitch Daniels speaks last month at the Conservative Political Action Conference in Washington. The speech has been called the most intellectually compelling conservative call to arms in years. Jose Luis Magana/AP hide caption

itoggle caption Jose Luis Magana/AP

U.S. Senate Majority Leader Harry Reid of Nevada (left), shown earlier this month, and former House Minority Leader Richard Gephardt (D-MO), pictured on Jan. 4, 1996, speak with the media about the policies related to government shutdowns. Alex Wong/Getty Images (left)/Ron Edmonds/AP (right) hide caption

itoggle caption Alex Wong/Getty Images (left)/Ron Edmonds/AP (right)

President Ronald Reagan, shown speaking on Feb. 8, 1982, has clearly been on President Obama's mind, says presidential historian Douglas Brinkley. Getty Images hide caption

itoggle caption Getty Images

President Obama, shown during a Dec. 22 news conference, will focus largely on achieving economic recovery in his State of the Union address, says press secretary Robert Gibbs. Brendan Hoffman/Getty Images hide caption

itoggle caption Brendan Hoffman/Getty Images

Former Florida Gov. Jeb Bush waves as he is introduced to the crowd during inauguration ceremonies for Republican Rick Scott on Jan. 4 outside the Old Capitol in Tallahassee, Fla. On Thursday, Bush and other Republican leaders are launching a new effort to reach out to Hispanic voters. Chris O'Meara/AP hide caption

itoggle caption Chris O'Meara/AP

The Obamas depart Monday after observing a moment of silence to honor those killed and wounded during Saturday's shooting in Tucson, Ariz. Mark Wilson/Getty Images hide caption

itoggle caption Mark Wilson/Getty Images

President Obama answers a question during a press conference in the Eisenhower Executive Office Building on Dec. 22, 2010. As the GOP takes over the House, how will the president respond to divided government? Chris Kleponis/AFP/Getty Images hide caption

itoggle caption Chris Kleponis/AFP/Getty Images

Rand Paul, a Tea Party favorite elected to the Senate from Kentucky, greets supporters during an election night party in Bowling Green. Tom Pennington/Getty Images hide caption

itoggle caption Tom Pennington/Getty Images

Mark Meckler, national coordinator for the Tea Party Patriots, wears a Tea Party pin at a July 21 news conference on Capitol Hill. After the elections, Meckler says, the movement with "really find its stride." Alex Brandon/AP hide caption

itoggle caption Alex Brandon/AP

House Minority Leader John Boehner (far right), the likely speaker in a GOP-led House, with other Republican House leaders, including (from left) Candice Miller (MI), House Minority Whip Eric Cantor (VA), Peter Roskam (IL), Cathy McMorris Rodgers (WA) and Kevin McCarthy (CA). Chip Somodevilla/Getty Images hide caption

itoggle caption Chip Somodevilla/Getty Images

Ohio Gov. Ted Strickland (left) and Republican challenger John Kasich at an Oct. 7 debate in Toledo. Nathan Daschle, the executive director of the Democratic Governors Association, points to the help Strickland's efforts gave to the Obama campaign in 2008 as an example of how governors can influence the presidential election. Andy Morrison/AP hide caption

itoggle caption Andy Morrison/AP

President Obama has many factors to weigh as he chooses a replacement for Chief of Staff Rahm Emanuel. Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP