WASHINGTON - An FAA reauthorization bill pending in the Senate may be subject to a cloture vote of 60 senators to overcome a hold Sen. Bob Corker, R-Tenn., has on the measure of special interest to FedEx.

Without using the word "hold," it appears Sen. Lamar Alexander, R-Tenn., has also intervened. His spokesman, Jim Jeffries, said Alexander would "use every legislative tool available to stop Congress from passing a law that singles out how FedEx is governed under federal labor law."

Although 35 senators are on the record asking Senate Majority Leader Harry Reid, D-Nev., to tee up the bill as an economic recovery measure, it's not at all clear if there are the votes necessary to move forward as long as House language on some labor and safety standards remains on the table in any future House-Senate conference committee negotiations.

One provision would make it easier for the International Brotherhood of Teamsters to organize FedEx employees who don't require FAA certification, including package delivery drivers.

A spokesman for Reid said Monday that a cloture vote was one option for moving forward with the bill. The Federal Aviation Administration bill expired in 2007 and has been given temporary extensions over the years, the last of which expires March 31.

FedEx spokesman Maury Lane said the company is working on the issues but "declines to discuss strategy. I think that's an issue that's more pertinent for the senators to discuss."