President Obama is expected to announce steps today that would provide temporary relief to some of the 12 million immigrants in the country illegally. Republicans are warning him against acting unilaterally on the issue. Carolyn Kaster/AP hide caption

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In this Nov. 7 photo, President Barack Obama meets with Congressional leaders in the Old Family Dining Room of the White House in Washington. From left are House Speaker John Boehner of Ohio, Obama, Senate Majority Leader Harry Reid of Nevada and Senate Minority Leader Mitch McConnell of Kentucky. Evan Vucci/AP hide caption

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President Obama meets with Emory University doctors and health care workers during his visit Tuesday to the Centers for Disease Control and Prevention in Atlanta. Mandel Ngan/AFP/Getty Images hide caption

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A health worker speaks with families in a classroom now used as Ebola isolation ward in Monrovia, Liberia. Ebola-stricken West Africa needs more health staff and more medical facilities. John Moore/Getty Images hide caption

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British Prime Minister David Cameron told the House of Commons on Monday that he wants to give police the power to seize the passports of Islamist fighters bound for Iraq and Syria. PA Photos /Landov hide caption

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President Obama speaks during a press conference at the White House on Monday about the situation in Iraq and the ongoing violence in Ferguson, Mo. Win McNamee/Getty Images hide caption

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Immigrants from Honduras and El Salvador who crossed the U.S.-Mexico border illegally are stopped in Granjeno, Texas, on June 25. President Obama asked Congress this week for $3.7 billion to cope with thousands of minors from Central America who are illegally crossing the U.S. border. Eric Gay/AP hide caption

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Detainees sleep in a holding cell at a U.S. Customs and Border Protection processing facility in Brownsville, Texas, on June 18. The White House on Tuesday sought $3.7 billion to deal with the immigration crisis at the border. Eric Gay/AP hide caption

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