Mike Leavitt -- how long will he be smiling? Photo: Utah governor's office. There has been considerable adverse comment from the environmental community about President Bush's nomination of Utah Gov. Michael Leavitt (R) to head the U.S. EPA. Most of that criticism has focused on the governor's environmental record in Utah, a record that appears to have both positive and negative elements. That he has been concerned about growth issues is certainly to his credit. I personally believe, however, that while Leavitt's record should receive careful scrutiny, the central issue today is not so much the environmental record of the …