Montana's two Democratic senators projected some coyness about their support for the Employee Free Choice Act (EFCA) after having previously sponsored the labor legislation.

Both Sens. Max BaucusMax Sieben BaucusTop Lobbyists 2017: Hired Guns GOP tries to keep spotlight on taxes amid Mueller charges Clinton-Sanders tensions linger for Democrats MORE (D-Mont.) and Jon TesterJonathan (Jon) TesterDems mull big changes after Brazile bombshell No room for amnesty in our government spending bill Trump bank nominee gets rough reception at confirmation hearing MORE (D-Mont.) refused to say how they'd plan to vote on the bill, though they were both sponsors of EFCA in 2007.

"It would be very hard to support the bill in its current form, but that is why I'm working with my colleagues in the Senate to bring some common-sense modifications to the bill to make sure it balances workers' interests with small-business interests," Baucus told The Missoulian, which did a two-part series on EFCA's potential impact on Montana.

Tester's spokesman meanwhile said EFCA "isn't ready for a Senate vote yet," and added that Tester would weigh the bill's pros and cons before deciding on how to vote.

Neithner Baucus nor Tester are sponsors of the most recent iteration of the labor bill.

The statements mark more potential woes for organized labor, which has been lobbying other centrist Democrats to support the legislation, with some reported success.