President George W. Bush signed his fourth tax cut in four years this morning at a Y-M-C-A in the capital city. President Bush signed the 146-billion-dollar bill known as the “Working Families Tax Relief Act of 2004.” He says, “Today we’re acting to keep vital tax relief in place.” The bill Bush signed extends the child tax credit, marriage penalty relief and the 10-percent tax bracket, for the next six years. Bush says the bill will also keep millions of families from having to pay the alternative minimum tax in 2005. Bush signed the bill in Iowa in part because the state remains a close call in the upcoming November election. But, Iowa’s also the home of Senate Appropriations Committee Chairman Chuck Grassley. Before he signed the bill, the President took some time to kid Grassley about campaign adds in which the repubican Senator brags about mowing his own lawn and driving an old car. He said, “You probably think I came here to sign an important piece of legislation. Actually I’m here for a different reason — the south lawn of the White House has a lot of grass — I’m looking for someone to mow it.” The President then gave Grassley a new nickname. He said, “You shall now be known as ‘grass mower’.” Bush also said he’d like Grassley’s old car when he’s done with it. Bush spent about ten minutes shaking the hands of supporters, then left the bill signing and went to the Des Moine suburb of Clive where he held an “Ask President Bush” town meeting. The only surviving child of former democrat President John Kennedy, Caroline Kennedy Schlossberg, also campaigned in Des Moines today for democrat John Kerrey.