The Senate's third-ranking Republican said on Sunday that President Trump should sign the Russia sanctions bill expected to pass Congress, saying it is in the president's "best interest."

“I think that in the end the administration will come to the conclusion that an overwhelming majority of congress has and that is that we need to sanction Russia for their meddling in the U.S. election. That I think will pass overwhelmingly again in the senate with a veto proof majority," Sen. John Thune John Randolph ThuneWhat Senate Republicans have said about election-year Supreme Court vacancies The Hill's 12:30 Report - Presented by Facebook - Don't expect a government check anytime soon The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Trump contradicts CDC director on vaccine, masks MORE (S.D.) told Chris Wallace on "Fox News Sunday."

“I think it is in his best interest for a lot of reasons to sign it, and I believe he will," he added.

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Thune's comments come before the House votes on the legislation aimed at limiting the Trump administration's ability to lift sanctions on Russia.

The legislation passed 98-2 in the Senate last month. The White House has expressed trepidations about the legislation, saying it could hinder its diplomatic relationship with Russia.

Sen. Ben Cardin Benjamin (Ben) Louis CardinPPP application window closes after coronavirus talks deadlock Congress eyes tighter restrictions on next round of small business help Senate passes extension of application deadline for PPP small-business loans MORE (D-Md.), who appeared with Thune, said the Senate would override a Trump veto.

“It has broad support in the Senate and in the House. If he vetoes the bill, we will override his veto," Cardin told Wallace.

The White House is grappling with a series of revelations surrounding alleged ties between the Trump campaign and Russia.

White House press secretary Sarah Huckabee Sanders insisted on Sunday the administration was supportive of congressional sanctions on Russia.

“The administration is supportive of being tough on Russia, particularly in putting the sanctions in place,” she told ABC’s “This Week.”

“The original piece of legislation was poorly written, but we were able to look at the House and Senate,” she said. “And the administration is happy with the ability to do that, to make the changes that were necessary, and we support where the legislation is now.”