Social conservatives are calling on President Barack Obama to cut out gay and lesbian couples from his proposal on immigration reform.

Obama's blueprint for immigration reform, unveiled in Las Vegas on Tuesday, includes a provision to allow U.S. citizens the ability to seek a visa for a spouse “on the basis of a permanent relationship with a same-sex partner.”

Under the current law, a gay American cannot sponsor an immigrant spouse for citizenship due to the Defense of Marriage Act (DOMA), which prevents the federal government from recognizing their marriage.

The administration's definition of a “permanent relationship” was not immediately clear.

Brian Brown, president of the National Organization for Marriage (NOM), the nation's most vociferous opponent of marriage equality, criticized the president's plan.

“This is yet another example of the president playing politics rather than enforcing our nation's laws and offering a true, workable solution,” Brown said.

“First, his administration threw in the towel and refused to defend the Defense of Marriage Act (DOMA). Then, he came out of the closet on gay marriage. Now, he is apparently proposing a direct violation of DOMA, currying added favor with gay activists, many of whom have lavished contributions on his reelection campaign.”

The Rev. Gabriel Salguero, president of the National Latino Evangelical Coalition, said the issue is “really going to complicate it for conservatives who really want immigration reform.”

(Related: Exit poll shows majority of Latinos support gay marriage.)

Speaking to the Christian Post, Dr. Richard Land, president of the Southern Baptist Convention's Ethics & Religious Liberty Commission, said gay couples were a “deal-killer.”

“I don't think it will be in any proposal that passes the House and the Senate because with it in there it won't pass the House and the Senate,” he said. “So the president needs to decide whether he wants immigration reform passed this year or not … We're just saying that that's a deal-killer.”