Congress

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Immigration policy has plagued President Obama, as he spent the last five years trying to strike a difficult balance on the issue between conservatives in Congress and immigrant-rights advocates. (Associated Press Photographs)

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** FILE ** In this Dec. 17, 2012, file photo, then New York Mayor Michael Bloomberg speaks at a news conference in New York where he and dozens of shooting survivors and victims' relatives called on Congress and President Obama to tighten gun laws and enforcement. (AP Photo/Seth Wenig, File)

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FILE - In this April 27, 2004 file photo, author E.L. Doctorow smiles during an interview in his office at New York University. Doctorow will be honored with the Library of Congress Prize for American Fiction. Librarian of Congress James H. Billington made the announcement Wednesday, April 16, 2014. (AP Photo/Mary Altaffer, File)