This view of the Constitution has been rejected by the federal courts, which consistently have held that under the Constitution, the states do not have the power to nullify federal laws. The courts have rejected the compact theory, finding that the Constitution was not a contract among the states.
A U.S. Border Patrol agent in San Diego has been arrested for hiding his undocumented father and other people in the U.S. illegally.
Medical assistance, unemployment insurance, and public education may be the programs most used by illegal aliens. Public assistance used by illegal aliens may place a greater financial burden on State and local governments than on the Federal Government.