In Bivens v. Six Unknown Agents of Federal Bureau of Narcotics, 403 U.S. 388, 91 S. Ct. 1999 (1971), the Supreme Court stated that a person subjected to unlawful search and seizure in violation of the Fourth Amendment could sue the federal agents involved for damages caused by the violation. A Bivens claim, therefore, has come to mean a suit for monetary damages against individuals who, under color of federal authority, violate constitutional rights.
If you don't meet the income requirements, you don't have to file with the federal government.