President Trump threatened to “close up our country” if he doesn’t get his long-promised wall on the nation’s southern border.

“We are fixing and building walls, but we need much more money,” he said at a Cleveland event touting his tax law Saturday. “We may have to close up our country to get this straight, because we either have a country or we don’t.”

The 48-minute “tax roundtable” featured local workers, business owners and GOP candidates, with frequent off-the-cuff interjections from the president.

The buildup to Ohio’s Republican primary, scheduled for Tuesday, has seen candidates for governor and U.S. Senate vying to “out-Trump” each other to appeal to conservative voters.

Trump also attended a private GOP fundraiser that raked in $3 million Saturday, the White House said.