Mr. Dorsey, 43, joins a growing list of celebrities, world leaders and technologists who are earmarking some portion of their wealth to fighting the spread of the coronavirus and its effects.

Oprah Winfrey has donated more than $10 million of her wealth to relief efforts, while other Hollywood personalities — including Justin Timberlake, Dolly Parton and Rihanna — have also made contributions. Last week, the Amazon chief executive, Jeff Bezos, said he would donate $100 million to American food banks through a nonprofit organization, Feeding America. And Mark Zuckerberg, chief executive of Facebook, has organized relief campaigns through Facebook and his own philanthropic organization, the Chan Zuckerberg Initiative.

President Trump’s pick for the pandemic inspector general is raising concerns.

President Trump’s new nominee to oversee a $500 billion Treasury bailout fund, Brian D. Miller, has taken a dim view of congressional oversight and has suggested that lawmakers are increasingly trying to use inspectors general as pawns by calling for politically motivated investigations and demanding accountability.

And he has warned that making inspectors general accountable to Congress poses a “danger” to their independence and creates separation of powers problems.

“If you’re reporting to the Congress in that fashion, your independence is jeopardized,” Mr. Miller said in an interview last year.

The fact that he has been working in the office of the White House counsel for the last year is raising concerns among Democratic lawmakers and ethics officials who say an independent watchdog needs to be an advocate for taxpayers, not the White House or Congress. The coronavirus economic relief legislation requires the inspector general to issue reports to Congress and alert lawmakers if his requests for information are stymied.