Ten federal immigration agents have filed suit against Homeland Security Secretary Janet Napolitano claiming recent directives are forcing them to break the law and ignore their duties when it comes to deporting illegal immigrants. The suit was filed Thursday in Texas federal court by Immigration and Customs Enforcement officials. It challenges recent directives allowing some illegal immigrants -- particularly non-felons and those who came to the U.S. as children -- to stay and, in some cases, get work permits. The suit, obtained by Fox News, says the agents are being forced to "violate federal law." It says the new directive "unconstitutionally usurps and encroaches upon the legislative powers of Congress." ICE Director John Morton is also named as a defendant. Read more: Immigration agents file suit against Napolitano over 'amnesty' program | Fox News should be interesting.