The strategy has existed since at least 2018, when the former Trump administration strategist Stephen K. Bannon boasted of the ability to overwhelm Democrats and any media opposition through a determined effort to “flood the zone” with initiatives.

This time, the flood is bigger, wider and more brutally efficient. As President Trump begins his second term, he has enacted his agenda at breakneck speed as part of an intentional plan to knock his opponents off balance and dilute their response.

Firing inspectors general. Sweeping clemency for Jan. 6 defendants. Investigations of perceived enemies. A federal hiring freeze. Moving to end birthright citizenship. An immigration crackdown. Terminating diversity, equity and inclusion programs. Revoking security clearances.

On Tuesday, just when Democrats thought they might come up for air, news broke that Mr. Trump had ordered a freeze on trillions of dollars in federal grants and loans, prompting a new round of outrage.

But the flood has had its intended disorienting effect: How can Democrats fight back when they can’t catch their breath?

“It’s been overwhelming sensory overload,” said Representative Jamie Raskin of Maryland, the top Democrat on the House Judiciary Committee.