MONTPELIER (AP) - The Vermont House is preparing to debate a bill that would allow immigrant farmworkers who are in the country illegally to drive in Vermont, with a new type of driver's privilege card.

A bill already passed by the Senate is designed to improve mobility for immigrant workers who say they often find themselves isolated without transportation on the Vermont farms where many of them work.

The bill may have a somewhat bumpier ride in the House than in the Senate, which passed it 27-2 last month.

The head of the Vermont State Police, Col. Tom L'Esperance, told a house committee last week he has misgivings, among them that the new type of licenses could become tools for fraud.