Peter Sprigg of the Christian conservative Family Research Council (FRC) on Monday warned that a proposed executive order protecting LGBT workers threatens “religious and constitutional liberties.”

President Barack Obama has reportedly agreed to sign the order, which would bar contractors doing business with the federal government from discrimination on the basis of sexual orientation or gender identity.

(Related: White House to issue gay workplace protections order.)

Sprigg said in a statement that the order invited lawsuits.

“This political gesture reflects the president's repeated disregard for the legislative process,” Sprigg said. “Congress has not passed the Employment Non-Discrimination Act (ENDA) or similar provisions, despite activists' pressure to do so, because of the detrimental impact on employers' and employees' constitutional freedoms of religion, speech, and association. Historically, these kinds of provisions have not been applied to conduct-based distinctions that are not found in the Constitution.”

“Today's announced executive order will give activists a license to challenge their employers whenever they feel aggrieved, exposing those employers to threats of costly legal proceedings and the potential of jeopardizing future contracts. Furthermore, by requiring federal contractors to consider characteristics and behaviors related to a person's sexual orientation or gender identity, this policy will make contractors liable for protecting actual or perceived self-disclosed and fluid identities that may not even be known,” he added.