MADISON, Wis. (AP) -

The Wisconsin Assembly has passed a bill that would exempt the military income a soldier earns in the year of the soldier's death in combat and the year leading up to his or her death from taxes.

The Assembly passed the bill 97-0 Tuesday. It now goes to the state Senate.

Andrew Johnson's son David, a former U.S. Army first lieutenant, was killed last year while patrolling in the Kandahar Province. Johnson says he was shocked to learn that while the federal government would forgive his son's income taxes, the state wouldn't.

Nearly 6,700 U.S. soldiers have died in combat since 2001. About 150 were from Wisconsin.