LEXINGTON, Ky. - U.S. Senate Majority Leader Bill Frist said Saturday night that after recent briefings, he is now comfortable with an Arab-owned company running port security for six American cities and backed off a pledge to pass legislation to stop the deal. But Frist, a Tennessee Republican who was in Lexington for a state GOP dinner, told reporters that the next few days will be crucial for other members of Congress to press intelligence officials about the details of such an arrangement. "My comfort level is good, but I have 99 other United States senators who need the opportunity...