The debate over immigration reform

President Obama and First Lady Michelle Obama visit with individuals taking part in Fast for Families on the National Mall in Washington, D.C.  (Pablo Martinez Monsivais / Associated Press)

Eliseo Medina, who fasted in support of immigration reform with the Fast for Families movement, talks with fellow fasters on the National Mall in Washington, D.C.   (Win McNamee / Getty Images)

Lizardo Buleje of San Antonio stands in front of the Capitol during a rally on immigration reform on Capitol Hill.  (Alex Wong / Getty Images)

President Obama stops and turns around to respond to an unidentified man who heckled him about anti-deportation policies in San Francisco.  (Pablo Martinez Monsivais / Associated Press)

Officials try to remove a protester locked to a gate at the regional Immigration and Customs Enforcement office during an immigration protest in Atlanta.  (Erik S. Lesser / EPA)

An activist shouts slogans in front of a regional Immigration and Customs Enforcement office during an immigration protest and rally in Atlanta.  (Erik S. Lesser / EPA)

Student Jonathan Hernandez, center, marches in an immigration rights rally on the University of Texas campus in Austin.  (Jay Janner / Associated Press)

Eight “Dreamers,” wearing their school graduation caps and gowns to show their desire to finish school in the U.S., march with linked arms to the U.S. port of entry where they planned to request humanitarian parole, in Nogales, Mexico.  (Samantha Sais / Associated Press)

A man listens to Rep. Steve King (R-Iowa) speak during the D.C. March for Jobs in Upper Senate Park near Capitol Hill in Washington.  (Drew Angerer / Getty Images)

Senate Majority Leader Harry Reid (D-Nev.) embraces Astrid Silva of Las Vegas, a Dream Act supporter whose family came to the U.S. from Mexico illegally and whose story has been an inspiration for Reid during work on the immigration reform bill.  (J. Scott Applewhite / Associated Press)

Sen. John McCain (R-Ariz.), left, and Sen. Charles Schumer (D-N.Y.), members of the bipartisan “Gang of Eight” who crafted the immigration bill, shake hands on Capitol Hill in Washington.  (J. Scott Applewhite / Associated Press)

Mercedes Montano, an immigrant from Mexico living in U.S. without legal status, prays during a 24-hour vigil outside the Civil Center in downtown Los Angeles. Demonstrators called on Congress to pass immigration reform.  (Susannah Kay / Los Angeles Times)

Senate Judiciary Committee Chairman Patrick Leahy (D-Vt.), from left, Sen. Richard Durbin (D-Ill.) and Sen. Dianne Feinstein (D-Calif.) discuss negotiations with Republicans during a markup session for the immigration reform legislation on Capitol Hill.  (Chip Somodevilla / Getty Images)

Wearing a shirt that reads “Keep Families Together,” 2-year-old U.S. citizen Eric Lopez runs through the hallway outside the Senate Judiciary Committee’s markup session for the immigration reform legislation.  (Chip Somodevilla / Getty Images)

Sen. Charles E. Schumer (D-N.Y.) talks with one of his staff members during a markup session for the immigration reform legislation.  (Chip Somodevilla / Getty Images)

A program and flag sit from a U.S. naturalization ceremony in New York City.  (John Moore / Getty Images)

Immigrants take the oath of U.S. citizenship at a naturalization ceremony held at the U.S. Citizenship and Immigration Services office in New York City.  (John Moore / Getty Images)