On today's "Top Line," Richard Trumka, the secretary-treasurer of the AFL-CIO, warned that union leaders may drop their longstanding support for Specter, D-Pa., if -- as he has promised to do -- he votes against them on their legislative priority, the Employee Free Choice Act.
Trumka said he's still confident that Specter's concerns about the bill can be addressed.
"He says he's not for the current bill in its current form, although I think there is a form that he will [support]. We'll see what happens," he said.
He added that any bill "absolutely" would have to provide for binding arbitration to provide a fixed timeline for resolving disputes over forming unions -- a provision that is harshly opposed by business groups.