Hmm, yeah this might just be a good idea!

Senators Barbara Boxer, D-Calif., and Amy Klobuchar, D-Minn., are reportedly leading the fight to attach an amendment that would limit cargo plane pilots to flying no more than nine hours a day — the same as passenger pilots can fly. Cargo pilots can fly up to 16 hours a day as it stands now.

Captain Chesley "Sully" Sullenberger, the retired airline captain who safely executed an emergency landing in the Hudson River in 2009, is also backing the amendment.
The comments come amid growing concern that pet interests could bog down the entire FAA bill, including a push to include renewable energy tax breaks. The agency’s current legal authority expires July 15.
“Measures used to prevent fatigue must be different for passenger carriers than they are for cargo carriers because our work schedules are different,” wrote FedEx, UPS, ABX Air and Atlas Air. - America's Trucking Newspaper