Caging Prohibition Act of 2009 - Amends the federal criminal code to prohibit state or local election officials from preventing an individual from registering or voting in any election for federal office, or from permitting a formal challenge under state law to an individual's registration status or eligibility to vote, if the basis for such decision is evidence consisting of:
Defines "voter caging document" as:
Requires any private individual who challenges the right of another citizen to vote to set forth in writing, under penalty of perjury, personal, first-hand knowledge establishing the grounds for ineligibility.