PRESIDENT BUSH made his visit with Iraqi Americans in Dearborn, Michigan, yesterday into something more than a feel-good photo op with natural fans. Bush used the occasion to hammer on two crucial themes. One was America’s unequivocal commitment to the rebuilding of Iraq. The other was his conviction that free Iraqis, with appropriate help, will do the job themselves. Both points deserve to be underlined. Think back a few years to the 1990s, when presidential commitments were habitually hedged. The Bill Clinton who said he would have voted with the majority on the first Gulf War, though he agreed with the arguments of the minority, turned into a president notorious for verbal gymnastics and quick footwork. This president is having none of it. He is staking his presidency on a four-square promise: “America pledged to rid Iraq of an oppressive regime, and we kept our word,” he said in Dearborn. “America now pledges to help Iraqis build a prosperous and peaceful nation, and we will keep our word again.”