WASHINGTON — Reviewing new polling data, consultants working for President Trump’s 2020 campaign discovered an unsurprising obstacle to winning support from two key demographic groups, millennials and suburban women. And that was his record on the environment.

But they also saw an opportunity. While the numbers showed that Mr. Trump was “never going to get” the type of voter who feels passionately about tackling climate change, a senior administration official who reviewed the polling said, there were moderate voters who liked the president’s economic policies and “just want to know that he’s being responsible” on environmental issues.

So for nearly an hour in the East Room on Monday afternoon, Mr. Trump sought to recast his administration’s record by describing what he called “America’s environmental leadership” under his command.

Flanked by several cabinet members and senior environmental officials — one a former lobbyist for the coal industry and the other a former oil lobbyist — Mr. Trump rattled off a grab bag of his administration’s accomplishments, which he said included “being good stewards of our public land,” reducing carbon emissions and promoting the “cleanest air” and “crystal clean” water.