"Legislation supporting a standardized national driver's license may have won unanimous approval in the Senate on Tuesday, but the bill's apparently smooth passage left some jagged edges in its wake.
The National Governors Association is threatening lawsuits to fight the legislation. And some states are threatening to ignore the legislation because they say it will cost up to $700 million for states to comply and will place a heavy burden on Department of Motor Vehicles workers.
Arkansas Gov. Mike Huckabee, a Republican, told the Associated Press this week that "if more than half of the governors agree we're not going down without a fight on this, Congress will have to consider changing" the rules.
In the meantime, mobilization against the legislation is also occurring on the citizen front. Civil liberties activist Bill Scannell, who launched a website this week to protest the legislation, said that visitors to his site sent more than 20,000 faxes to senators within 24 hours.
Marc Rotenberg, executive director of the Electronic Privacy Information Center, said more than 600 organizations -- including state legislation associations, civil liberties groups and pro-immigrant advocates -- opposed the bill.
"This is one of the biggest mistakes Congress has ever made," Rotenberg said. "This is not over by any means."