National Wildlife Refuge System Operations Enhancement Act of 2007 - Increases the price of Migratory Bird Hunting and Conservation Stamps.
Requires amounts received for such stamps sold in excess of $15.00 to be used by the Secretary of the Interior for the costs of national wildlife refuge operations.
National Wildlife Refuge System Semipostal Stamp Act of 2007 - Sets forth provisions for the issuance and sale of a special postage stamp in order to afford a convenient way for the public to contribute toward funding the operations of the National Wildlife Refuge System.
National Wildlife Refuge Checkoff Act of 2007 - Permits a taxpayer to designate that $1 of any tax overpayment, and any cash contribution which the taxpayer includes with such return, shall be deposited into the National Wildlife Refuge System Trust Fund established by this Act.
Requires the Secretary of the Treasury to make payments to the U.S. Fish and Wildlife Service (USFWS) from such Fund.