Our Chicago deportation defense attorneys have argued removal cases before the Second, Third, Sixth, Seventh, Eighth, and Ninth Circuit Court of Appeals, and Supreme Court. Call today for help. Due to the provisions of the Immigration and Nationality Act, the U.S. government, through the Department of Homeland Security, can attempt to deport a person for a number of reasons – from simply overstaying or violating the terms of a visa to the commission of certain crimes, from committing fraud in an immigration application to involvement in terrorist organizations.