Donald Trump has yet to convince Bryan Fischer that he's a social conservative. For one thing, Trump isn't anti-gay enough.

The billionaire entrepreneur with one eye on a White House run has been vying for early caucus state Iowa's large bloc of socially conservative voters. (Along with nearly every other Republican hopeful.)

In recent weeks, the real estate mogul has stated that he opposes all forms of legal recognition for gay couples, not just marriage.

On Wednesday, he repeated his opposition to gay marriage on Fox News' The O'Reilly Factor.

“I'm against it,” Trump told his host. “I just don't feel good about it, I don't feel right about it. I'm against it.”

But the American Family Association's (AFA) Fischer says Trump “is not he guy.” One reason is he's just not anti-gay enough.

“So I’ve got some questions for Trump on the issue of gay marriage and the homosexual agenda,” Fischer wrote on in an op-ed on Friday. “Does he believe the Defense of Marriage Act (DOMA) is constitutional? Does he believe President Obama violated his oath of office by refusing to defend this law in court? Does he support a federal marriage amendment that would define marriage as a one-man, one-woman institution and prohibit marriage counterfeits like civil unions and domestic partnerships? Would he reverse President Obama’s decision to grant certain spousal benefits to the sexual partners of homosexuals, contrary to DOMA? Would he support reinstatement of the ban on open homosexual service in the military? Would he veto the Employment Non-Discrimination Act (ENDA) if it came to his desk? Would he sign a repeal of the Hate Crimes act, which will criminalize speech that is critical of homosexual behavior?”

Trump says “he's opposed to gay marriage,” Fischer added. “Fine. President Obama said exactly the same thing on the campaign trail, an we all see how that turned out.”