WASHINGTON – Despite growing doubts among Republicans over special counsel Robert Mueller's investigation, Sen. Marco Rubio said Wednesday he has confidence in the process.

"I continue to believe what I believed for a long time: the best thing that can happen for everyone, the president included, is that Mueller be allowed to complete his work."

Reports of FBI text messages are "troublesome," Rubio said, but given Mueller's reputation and through interactions when Mueller was FBI director, "I remain convinced that when this is all said and done, Mueller is going to only pursue things that are true and he will do it in a fair and balanced way.

"If the end product does not reflect that, I'll say I was wrong," added Rubio, a member of the Senate Intelligence Committee.

"But I think the best thing that can happen for the president, for the country and for everyone is that (Mueller) be allowed to lead his investigation as thoroughly and as complete as possible and that we allow the facts from that investigation to lead where they may, to lead to the truth."

President Trump has urged senior Senators to wrap up their own investigations, but Rubio said he has not been leaned on.

"Absolutely not," he told Florida reporters, "I've never discussed the Senate investigation with him."

Trump said Sunday he is not considering firing Mueller.