I agree with this sensible congress(person) , I've heard of no stats to substantiate any claims that motorcycles create a hazard to the public that would warrant a vehicle - specific checkpoint . This seems tantamount to a violation of the amendment against "unlawful search and siezure."
And yes , Bucky and Loco P , I agree that the checkpoints for commercial trucks borders on the same . Here in Ga. we get accosted by the DOT often , and no probable cause is needed to make these stops .

P.S. take the 70 K from the fed and use it for incentives for enrollment in an accredited AMA sefety course . Pass the course and get a refund of 75 bucks !! Somefin like that .