During a press conference Tuesday evening, Rep. Paul Ryan, R-Wisc., answered the call to run for the House of Representatives' Speaker position to replace outgoing Speaker John Boehner, R-Ohio, who is set to resign at the end of the month. However, in addition to stating his willingness "to serve" as the House Speaker, the 45-year-old congressman laid out a list of standards that would require the divided GOP to unite behind him.

The Wisconsin lawmaker began to face mounting pressure to run for the speakership after Republican Majority Leader Kevin McCarthy abruptly dropped out of the race earlier this month. Republican leaders then began urging Ryan to take on the position and use his influence to unify the fractured party.

Initially, the Wisconsin lawmaker was very reluctant to take on the role. The job would also require him to sacrifice his family life as it demands long hours and frequent travel.

Nonetheless, the former GOP vice presidential nominee decided to step up to the plate, and is now asking the whole conference to stand behind him.

On Wednesday, many of the conservatives that consistently fought and challenged Boehner -- especially members of the conservative House Freedom Caucus -- signaled they aren't ready to support Ryan. For one, Freedom Caucus leader Rep. Raul Labrador of Idaho rejected Ryan's demand to make it harder for lawmakers to overthrow a sitting speaker, calling it a "nonstarter," reports The New York Times.

"We have to remember everything in the House and everything in Congress is about checks and balances," Labrador told CNN. "We have two houses of Congress for that reason. We have three branches of government for that reason, and one of the reasons that every board has the freedom to vacate (the chair)."

Meanwhile, Freedom Caucus member Rep. Mo Brooks said he takes issue with Ryan's record on immigration.

"Paul Ryan's support for amnesty and open borders, that is a significant factor," said the Alabama representative.

"On the positive side," Brooks noted that "Paul Ryan is a very charismatic individual, he's an eloquent spokesman, he's a good fundraiser, all of those are positive factors. So you have to weigh all of these factors."

Boehner, on the other hand, believes Ryan will undoubtedly become his successor.

"I think Paul is going to get the support that he is looking for," Boehner told reporters Wednesday morning. "I thought he laid out a very clear vision of how he would run the speakership. And I thought the members responded very well to him."

He added, "He's a very good member. He works hard. He's very bright. and he has good relationships, I think, with all the wings of the party. That's why I think he'll be doing fine."