WASHINGTON – A bipartisan group of lawmakers said on Monday they have agreed on a proposal that would give the U.S. government sweeping new powers to block billions in U.S. investment into China, although the measure is part of a broader bill with an uncertain future.

The provision is part of broadbased legislation to boost U.S. competitiveness with China and also grant $52 billion to chipmakers to expand U.S. operations.

“The refined proposal released today has bipartisan, bicameral support and addresses industry concerns, including the scope of prospective activities, industries covered, and the prevention of duplicative authorities,” said U.S. Senators Bob Casey and John Cornyn, and Representatives Rosa DeLauro, Bill Pascrell, Jr., Michael McCaul, Brian Fitzpatrick and Victoria Spartz, in a statement.

The initial “outbound investment” proposal had run into opposition on the fear it could reduce companies’ investments abroad, leading some chipmakers to oppose its inclusion in the chips bill being hammered out by Senate and House lawmakers.

Democratic Senator Mark Warner told Reuters on Monday the “the clock is ticking” on the broader chips bill and said there were “a lot of conversations” about pivoting to a bill that would only focus on subsidies for plants to make chips, potentially dropping trade provisions and other measures aimed helping the U.S. compete with China in science, business and technology.

The outbound investment measure was originally proposed as a standalone bill by Cornyn and Casey, but was later added to the House version of a massive bill that includes the grants for chipmakers and is aimed at countering China’s rise.

The draft legislation, which would capture fewer investments than the original version, stirred opposition from critics who said it would harm American competitiveness. The US-China Business Council said about the new draft, “If such government controls were implemented on a unilateral basis, it would only hurt the flexibility and resilience of American companies.”

The draft says a new investment committee would engage with allies to coordinate and share information. The legislation is intended to give the U.S. government greater visibility into U.S. investments. It will be mandatory to notify the government of investments that may fall under the new regulations, and the U.S. can use existing authorities to stop investments, or mitigate risk. If no action is taken, the investment can move forward.

The concept behind the measure has support within the Biden administration. U.S. President Joe Biden’s national security adviser Jake Sullivan said in July the government was working on new investment screening and considering outbound investment as it seeks to better position the United States for competition in technology.

A study by Rhodium said 43% of U.S. foreign direct investment transactions in China over the past two decades could have been subject to screening under the broad categories set out by the original proposal.

Reporting by Alexandra Alper and David Shepardson in Washington; Karen Freifeld in New York; Editing by Nick Zieminski, David Gregorio and Richard Pullin