Sen. Chuck Grassley Charles (Chuck) Ernest GrassleyCollins says she will vote 'no' on Supreme Court nominee before election The Hill's Morning Report - Sponsored by Facebook - Trump, GOP allies prepare for SCOTUS nomination this week Gardner signals support for taking up Supreme Court nominee this year MORE (R-Iowa) says he's open to backing legislation that would make it tougher for President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE to impose tariffs on imports in the name of national security.

"Maybe the definition of national security or maybe the conditions under which national security could be used as an excuse is a little wide," Grassley told Axios in an interview where he expressed support for bipartisan legislation that would give the Pentagon a bigger role in determining whether imports are a risk to national security.

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The legislation would constrain Section 232, which gives the president the authority to impose trade measures to hold back imports if it is determined that the imports are harming national security.

Trump used Section 232 to justify tariffs on steel and aluminum imports earlier this year. He has also talked about using Section 232 to impose tariffs on imports of foreign automobiles.

The legislation to change Section 232 was offered by Sens. Rob Portman Robert (Rob) Jones PortmanMcConnell locks down key GOP votes in Supreme Court fight Romney undecided on authorizing subpoenas for GOP Obama-era probes Congress needs to prioritize government digital service delivery MORE (R-Ohio), Joni Ernst Joni Kay ErnstThe Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting Liberal super PAC launches ads targeting vulnerable GOP senators over SCOTUS fight Romney backs pre-election Supreme Court vote, paving way for McConnell, Trump MORE (R-Iowa) and Doug Jones (D-Ala). Sens. Lamar Alexander Andrew (Lamar) Lamar AlexanderGraham: GOP has votes to confirm Trump's Supreme Court nominee before the election The Hill's Morning Report - Sponsored by Facebook - Washington on edge amid SCOTUS vacancy This week: Supreme Court fight over Ginsburg's seat upends Congress's agenda MORE (R-Tenn.) and Roger Wicker Roger Frederick WickerBottom line Hillicon Valley: DOJ indicts Chinese, Malaysian hackers accused of targeting over 100 organizations | GOP senators raise concerns over Oracle-TikTok deal | QAnon awareness jumps in new poll Shakespeare Theatre Company goes virtual for 'Will on the Hill...or Won't They?' MORE (R-Miss.) have since signed on as co-sponsors.