House Speaker John Boehner leaves the chamber of the Portuguese Parliament during an April 17 visit in Lisbon. Boehner was in Lisbon as part of an international trip that included visits to Afghanistan and Abu Dhabi. Francisco Seco/AP hide caption

itoggle caption Francisco Seco/AP

Migrants sit in a boat during a rescue operation by the Italian navy off the coast of Sicily on Nov. 28. Italy is looking to revamp the way it handles the hundreds of thousands of migrants who arrive annually. Reuters/Landov hide caption

itoggle caption Reuters/Landov

President Obama meets Friday with immigration activists on the National Mall in Washington. Leslie E. Kossoff/Pool/EPA/Landov hide caption

itoggle caption Leslie E. Kossoff/Pool/EPA/Landov

Illegal immigrants captured in the Libyan coastal city of Surman are held at a temporary prison in an eastern district of Tripoli, Libya, on Oct. 19. Hamza Turkia/Xinhua /Landov hide caption

itoggle caption Hamza Turkia/Xinhua /Landov