Republican senator: I am a no if GOP tax plan increases debt too much

Sen. James LankfordJames Paul LankfordOvernight Cybersecurity: Senate Intel releases election security findings | Facebook to meet with officials on Capitol Hill amid Cambridge Analytica fallout | Orbitz admits possible breach Senate Intel releases summary of election security report Trump presses GOP to change Senate rules MORE (R-Okla.) said on Sunday that he would vote against the Republican tax-reform plan if it increases the debt too much. 

"I am a no. I want to make sure we have reasonable assumptions in the process for growth estimates," Lankford told NBC's Chuck Todd on "Meet the Press." 

"I’m actually not comfortable with increasing the debt. This is something that’s been a behind-the-scenes conversation for a long time. It’s one thing to be able to cut taxes, it’s another thing to be able to say, ‘how are we going to deal with our debt and deficit?’" he continued. 

Lankford's comments come after House Republicans introduced their tax-reform plan last week. It is expected to pass through the lower chamber, but face more opposition in the upper chamber. 

Debt watchdogs are not thrilled with the plan due to the fact it could add up to $1.5 trillion in debt over a decade.

Speaker Paul RyanPaul Davis RyanHouse Dem moves to force vote on bill protecting Mueller Collins: 'Extremely disappointing' ObamaCare fix left out of spending deal House poised to vote on .3T spending bill MORE (R-Wis.) defended the proposal in a separate interview on Sunday. 

"The reason we did it that way is because we believed that the Senate parliamentarian won’t let us use what we call dynamic scoring," Ryan said on "Fox News Sunday." 

"Let me just get you right there. You’re going to say this is a $1.5 trillion dollar tax cut — we are, we are convinced that this is going to give us faster economic growth. I’m not saying every tax cut pays for itself," he added.