Authorizing the commissioner of public safety to award grants to local government units to conduct alcoholic beverage retailers compliance checks relating to underage sales and to enforce the underage prohibition on and along waterways and in state parks; requiring the commissioner to establish requirements for grant recipients governing the minimum number of compliance checks required and the time frame for the checks; requiring recipient annual reports to the commissioner on use of the grants; appropriating money to the commissioner for the grants and for creation and maintenance of a database to collect the results of compliance checks conducted by the state and local government units; requiring commissioner reports to the legislature by a certain date on grants awarded and on results of liquor law compliance (mk)