By Amanda Becker and Patricia Zengerle

WASHINGTON (Reuters) – The U.S. House of Representatives is expected to vote overwhelmingly on Tuesday for a bill that would slap new sanctions on Russia, Iran and North Korea, potentially complicating President Donald Trump’s hopes of pursuing improved relations with Moscow.

The bipartisan measure aims to punish Russia for its 2014 annexation of Crimea from Ukraine and for alleged interference in the 2016 U.S. presidential election. The measure’s fate in the Senate is uncertain after a key senator said the deal announced over the weekend may not be final.

Republican Senator Bob Corker, chairman of the Senate Foreign Relations Committee, told reporters that deal negotiators had a “very good weekend” but the announcement “seemed somewhat premature.”

“We’re about there, there’s still some procedural issues we’re discussing but, you know, I think it worked out very, very well, we still got a couple of things to talk about on North Korea,” Corker said.

If the Republican-led Senate passes the measure, Trump will need to decide whether to sign the bill or veto it. Rejecting it would carry a risk that his veto could be overridden by lawmakers if they can muster enough support.

The Trump administration has objected to a provision in the sanctions bill that the president obtain congressional approval before easing any sanctions on Moscow.

“He’s going to study that legislation and see what the final product looks like,” White House spokeswoman Sarah Sanders told reporters on Monday when asked whether Trump would support it.

Trump’s relationship with Russia has been a focus of the first six months of his presidency as investigations continue into whether his associates colluded with Russian hackers to influence the election on his behalf.

Russia denies interfering in the U.S. election and Trump denies his campaign colluded with Moscow.

As the Republican-controlled House takes up the sanctions bill, Trump’s son-in-law, Jared Kushner, will visit Capitol Hill for a second straight day to be interviewed about his contacts with Russian officials during the 2016 campaign and the presidential transition.

An earlier version of the bill, including sanctions on Russia and Iran, passed the Senate 98-2 on June 15. A North Korea sanctions bill passed the House by 419-1 in May and House lawmakers were becoming increasingly impatient with the Senate’s failure to take up that legislation.

House members saw the Iran and Russia sanctions bill as a chance finally to get the North Korea measure through the Senate.

(Additional reporting by Steve Holland; Editing by Peter Cooney)