President Clinton proposed measures Monday to crack down further on drug use by prison inmates as he continued a blitz of policy announcements highlighting the 1998 agenda he intends to lay out in his State of the Union speech in two weeks.

In a brief Oval Office ceremony, Clinton signed a presidential directive that will force states to measure the extent of the drug abuse problem in their prisons and report annually. Clinton also proposed $200million more to combat drugs behind bars and called for legislation that would require states to stiffen sentences and would give them more flexibility in funding anti-drug programs.

White House officials hinted Monday at two other possibilities that may find their way into the State of the Union address - a plan to help schools hire more teachers and another to increase the minimum wage. Both ideas have influential patrons on Capitol Hill, but Clinton and his aides played coy on whether either may win his backing.