Government Bailout Prevention Act This bill prohibits the use of federal funds to purchase or guarantee obligations of, issue lines of credit to, or provide grants to any state (defined to include the District of Columbia and any U.S. territory or possession), municipal, local, or county government that, on or after January 1, 2019, has defaulted on its obligations, is at risk of defaulting, or has filed for bankruptcy. The Department of the Treasury is prohibited from using general fund revenues or borrowed funds to purchase or guarantee any asset or obligation of any such state, municipal, local, or county government. Federal Reserve banks are prohibited from assisting such a state, municipal, local, or county government or other entity with taxing or bonding authority.