As an official White House event, Biden was not there in his capacity as a candidate. Instead, the speech was a campaign launch without an explicit launch of the campaign. He shook every hand on stage. He flashed a big grin more than once. He peppered his speech with booming yells about workers being the backbone of American and bottom-out economics.

But while the crowd erupted into a “Let’s go Joe” chant, Biden left talk of 2024 somewhere behind the dais. It was an implicit recognition that the actual act of running for office comes with certain legal restrictions, an illustration of how tricky it can be to walk the line between president and incumbent presidential candidate.

Though Biden’s speech came just hours after he formally launched his 2024 campaign with a three-minute video in which he asked voters to help him “finish the job,” he made no such ask of the union members before him.

Still, Tuesday’s speech at the Washington Hilton previewed how the president will make his case in the coming months — with official and political events and travel to highlight his administration’s accomplishments before kicking off a barnstorming general election campaign in 2024. He zeroed in on legislative accomplishments, from the Inflation Reduction Act to the bipartisan infrastructure law, while making the case that his core economic plan was working.

“Under my predecessor, Infrastructure Week was a punchline. On my watch, Infrastructure Week has become a decade headline — a decade. That’s where you all come in. We’ve already announced over 25,000 infrastructure projects in 4,500 towns across America and we’re just getting started,” Biden said.

“Union workers will build roads and bridges, lay internet cable, install 500,000 electric vehicle chargers throughout America. Union workers are going to transform America. And union workers are going to finish the job.”

Biden, who would be 86 at the end of a second term in the White House, is battling an approval rating stuck in the low 40s. But White House aides have repeatedly emphasized the unpopularity of his political opponents, particularly Trump. Biden will have 18 months to fundraise before Election Day, which could present a rematch with the opponent he beat in 2020, former President Donald Trump.

But on Tuesday, the president’s mood appeared unfazed by the great obstacles hovering over his announcement. The room full of union workers buzzed with chatter about the timing of his appearance.

“As they say, he’s the most pro-labor, pro-union president in the history of the United States. It’s pretty fitting that he announced this today,” said Dustin Himes, of Bricklayers Local 15, a labor union in Kansas City, Mo. “It’s pretty special.”