U.S. House Speaker Nancy Pelosi said on Thursday that President Donald Trump threw a temper tantrum at a meeting with Democratic congressional leaders a day earlier and that she wished his family or staff would conduct "an intervention" with him for the good of the country.

In a second consecutive day of tough words about Trump by the Democratic speaker of the House of Representatives, Pelosi accused Trump of obstruction of justice, which she said is an impeachable offense.

Pelosi told reporters Thursday at her weekly news conference: “I wish that his family or his administration or his staff would have an intervention for the good of the country.” And she suggested: “Maybe he wants to take a leave of absence.”

Read more: Trump accuses Pelosi of lying after meeting blow-up - Pelosi prays for the nation

On Wednesday, shortly before a previously scheduled meeting with Trump at the White House to discuss infrastructure investment legislation, Pelosi accused Trump of a "cover-up" in regard to investigations related to Russia's meddling in the 2016 U.S. elections.

Her remarks rankled Trump and prompted him to walk out of the infrastructure meeting after just three minutes, possibly sinking the legislation's prospects.

Trump said it was impossible to work on such legislation as long as Democrats were continuing their "phony" investigations of him.

Pelosi holds weekly news conference - full video

At her weekly news conference on Thursday, Pelosi remained on the attack, repeating her contention from the previous day that Trump was incapable of working on complex legislative issues.

"I can only think that he wasn't up to the task of figuring out the difficult choices of how to cover the cost of ... the important infrastructure legislation that we had talked about three weeks before."

While she raised the issue of obstruction, Pelosi also said that House Democrats were not yet prepared to launch formal impeachment proceedings against Trump.

Even though Trump has indicated that he is not willing to engage in bipartisan work on legislation as long as House Democrats are investigating him, both Pelosiand Senate Democratic Leader Chuck Schumer on Thursday challenged Republicans in Congress to leave the Republican president behind and continue working on legislation without him if he is unwilling to engage.

Lawmakers are trying to put the finishing touches on a long-delayed disaster aid bill.

Meanwhile, Republican and Democratic leaders in Congress want to strike a two-year deal on federal spending levels and raising the U.S. Treasury Department's borrowing authority.

Both are needed to avert government shutdowns and a possible credit default later this year