EPA official who quit gets Senate’s attention March 1 — The resignation of the top rules enforcer at the Environmental Protection Agency has caught the attention of Senate Democrats, who plan to use his criticism of the White House at a hearing next Thursday. In his resignation letter, Eric Schaeffer said the EPA is “fighting a White House that seems determined to weaken the rules we are trying to enforce.” The EPA denied the allegations, saying the Bush administration was committed to enforcing environmental laws