House Republican Trey Gowdy, a conservative all-star, officially endorsed Florida Senator Marco Rubio for President Tuesday.

Joining Rubio on a two-day road trip through Iowa before the New Year, Gowdy enthusiastically supported the young Senator, exclaiming before a crowd of people that he has his vote:

"I'm in Iowa to give you a word of encouragement. It is not my job to tell you who to vote for. But I am going to tell you who I'm going to vote for ... I'm going to vote for Marco Rubio."

The deciding factor for Gowdy was Rubio's stance on two particular issues:

"National security and public safety are the most important issues to me. And there is nobody better on those two issues than Marco Rubio,"

Gowdy also touted Rubio's efforts to undermine Obamacare, calling him "the person who's doing the most" to combat the law:

"He's not going to brag about it, he's not flashy which is unusual for politics in this day and age, but Marco Rubio and his focus on risk corridors may wind up being the undoing of the so-called Affordable Care Act."

And he said that Rubio has the "ability to communicate our message of principled conservatism in a hopeful, aspirational, persuasive way."

"It's ok to be hopeful that the message of principled conservatism can win again," Gowdy continued. "I found that hope in a place that — if you'd told me 10 years ago I would find it, I wouldn't have believed you — in the son of a bartender, in the son of a housekeeper who know what it means to live the American dream."

"I trust Marco Rubio to lead a country safely that has the three most precious things in my life in it," said Gowdy, referring to his family.