The federal government says it has cut off grants to a Jewish college in suburban Detroit after finding that thousands of students lived in Israel and weren't taking classes through the school.The Detroit Free Press obtained a February letter to the Michigan Jewish Institute from the U.S. Education Department. The government says many students who claimed to be studying abroad in Israel actually were full-time Israeli residents who were students elsewhere in that country.The government says grants of as much as $6,000 a year, were used to benefit those students and operations of the Michigan Jewish Institute.The school declined to comment on the allegations. It has told students to come up with other money to pay bills.