FRESNO, Calif. (AP) — A top adviser to John McCain said another terrorist attack on U.S. soil would be a "big advantage" for the Republican presidential candidate, drawing a sharp rebuke Monday from both the presumed GOP nominee and Democrat Barack Obama.

Charlie Black, already in the spotlight for his past lobbying work, is quoted in the upcoming July 7 edition of Fortune magazine as saying such an attack "certainly would be a big advantage to him." Black said Monday he regretted the comment.

Questioned about Black's comments during a news conference, McCain said, "I cannot imagine why he would say it. It's not true. I've worked tirelessly since 9/11 to prevent another attack on the United States of America. My record is very clear."