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Marco Rubio says he'll support Republican presidential nominee Donald Trump

But he says he stands by "everything" he said during his primary campaign

(CNN) —  

Florida Sen. Marco Rubio is standing by his description of Donald Trump as “a con artist,” but he says in a new interview he still plans to support the real estate mogul for president.

“I’ve stood by everything I ever said in my campaign,” Rubio told the Miami Herald editorial board Monday when asked about his comments made during the Republican presidential primary earlier this year.

RELATED: Marco Rubio: Not going to turn over GOP to ‘con artist’ Donald Trump

He said the race is “in a different place now” – with voters facing a “binary choice” between Trump and Hillary Clinton.

“In our republic, while the presidency is powerful, there is a balance of power in this country, and a significant amount of it resides in the United States Senate,” Rubio said. “It’s one of the reasons why I seek to run again.”

Rubio previously told CNN earlier this year that he apologized to Trump for one of his comments: About the size of Trump’s hands.

“I apologized to him for that,” Rubio told CNN’s Jake Tapper on “State of the Union.” “I said, ‘You know, I’m sorry that I said that. It’s not who I am and I shouldn’t have done it.’”

RELATED: Marco Rubio: ‘I changed my mind,’ will run for re-election

ABC reported Tuesday that Rubio – who has not appeared on the campaign trail with Trump – will stump with Trump’s running mate Mike Pence in Florida. CNN has reached out to the Rubio campaign for comment.

Iowa Rep. Steve King, a Republican, told CNN’s Carol Costello that Rubio’s comments are “a political statement.”

“I would think that he should find a way to mitigate that statement about Donald Trump,” King said on “Newsroom.” “It’s a political statement, I would presume”

He added that the focus should be on putting the country “back on the rails again.”