Corker's action extends a years-long fight in Washington between the mostly non-union FedEx and its unionized rival United Parcel Service Inc. over how workers at both companies should be treated under U.S. labor laws. "We are supportive of the Senate FAA bill, but we have placed a hold until we can be assured that the controversial FedEx provision will not be included in the final legislation," Laura Lefler Herzog, a spokeswoman for Corker, a Republican, said today in an e-mailed statement.
