A number of members of Congress, notably Democrats going through troublesome re-election races, have clamored in latest days for Mr. Biden to invoke the regulation to ease the system scarcity. It was not clear how shortly the influence could be felt.

A White Home official, talking on the situation of anonymity and with out authorization to touch upon the plan, mentioned it may take time for firms to utilize the Protection Division’s provide to ship system. However the official added that Mr. Biden was decided to do something he may to shave even just a few days off the manufacture and distribution of system.

The White Home provided particulars on the trouble because it confronted aggressive questioning by Congress. In latest days, lawmakers have introduced plans to haul administration and business officers to Capitol Hill for testimony, demanded solutions from Mr. Biden’s staff on how the scarcity was allowed to develop, and launched investigations into the disaster and Abbott Diet, the corporate that recalled of a number of of its system merchandise after no less than two infants died.

On Wednesday night, the Home was anticipated to approve bipartisan legislation that might grant the federal authorities emergency authority to broaden the varieties of system that may be bought with advantages from the Particular Supplemental Diet Program for Ladies, Infants and Kids, often called WIC. About half the system bought in america is bought with WIC advantages, and the laws goals to make sure that these advantages can be utilized to purchase no matter system is accessible.

However the proposal to concern emergency cash for the F.D.A. was prone to face a harder street amid opposition from Republicans, who mentioned it was a clean examine for an company that had failed to stop a serious disaster.

In a discover despatched to rank-and-file lawmakers, Republican leaders charged that Democrats had deserted bipartisan talks and as a substitute put ahead laws “with no plan to really repair the issue, all whereas failing to carry the F.D.A. accountable.”

The WIC measure, against this, was anticipated to attract broad assist.

“I do know what it means to not be capable of stretch out milk for the complete month,” Consultant Jahana Hayes, Democrat of Connecticut and a sponsor of the invoice, mentioned this week. Ms. Hayes, who mentioned she had used WIC advantages to buy system added, “with the whole lot happening proper now, the very last thing a household ought to have to fret about is feeding their kids.”