A number of members of Congress, significantly Democrats going through tough re-election races, have clamored in latest days for Mr. Biden to invoke the regulation to ease the components scarcity. It was not clear how rapidly the affect can be felt.

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

The White Home provided particulars on the hassle because it confronted aggressive questioning by Congress. In latest days, lawmakers have introduced plans to haul administration and trade officers to Capitol Hill for testimony, demanded solutions from Mr. Biden’s workforce on how the scarcity was allowed to develop, and launched investigations into the disaster and Abbott Diet, the corporate that recalled a number of of its components merchandise after not 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 increase the sorts of components that may be bought with advantages from the Particular Supplemental Diet Program for Girls, Infants and Kids, generally known as WIC. About half the components 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 components is accessible.

However the proposal to situation emergency cash for the F.D.A. was prone to face a harder highway amid opposition from Republicans, who mentioned it was a clean examine for an company that had failed to forestall 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, in contrast, was anticipated to attract broad assist.

“I do know what it means to not have the ability to stretch out milk for your entire 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 components added, “with all the pieces happening proper now, the very last thing a household ought to have to fret about is feeding their youngsters.”