The National Organization for Marriage (NOM), which has yet to comment on gay marriage rulings in Colorado and Florida, on Tuesday criticized President Barack Obama for signing an executive order that prohibits federal contractors from discriminating against employees on the basis of sexual orientation and gender identity.

(Related: Obama on banning gay discrimination: We're on the right side of history.)

NOM, the nation's most vociferous opponent of marriage equality, said the order puts Christians at risk and called on Congress to pass legislation repealing the order.

“The fact is that non-discrimination rules like the order issued by President Obama can become a weapon used to punish and harass individuals and groups who support marriage as the union of one man and one woman,” said President Brian Brown. “As with the flawed ENDA (Employee Non-Discrimination Act) legislation that was rejected by Congress, President Obama's order has the great potential of putting employers in the position of standing up for their faith values or violating the new order. This will unnecessarily subject people of faith to harassing complaints and lawsuits.”

“All manner of frivolous lawsuits could result from an action like this, and that's a dangerous thing when the courts have already shown such a lack of restraint when it comes to the question of the definition of marriage. This is nothing more than an agenda to create a cultural narrative wherein the belief in marriage as the union of one man and one woman becomes the legal and social equivalent of bigotry or hate speech. It is the next step on a path we've already seen this administration proudly pursuing, a path toward a new thought-policing state where those who hold traditional values about marriage and family are to be marginalized,” he added.

(Related: Richard Land: Christian conservatives need to stand up to “gay thought police.”)