Sen. Elizabeth Warren Elizabeth WarrenNo new taxes for the ultra rich — fix bad tax policy instead Democrats back away from quick reversal of Trump tax cuts It's time for newspapers to stop endorsing presidential candidates MORE (D-Mass.) grilled Ben Carson at his Thursday confirmation hearing to lead the Department of Housing and Urban Development (HUD).

The two went back and forth over whether Carson would commit at HUD to prevent any real estate companies linked to President-elect Donald Trump Donald John TrumpBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Military leaders asked about using heat ray on protesters outside White House: report Powell warns failure to reach COVID-19 deal could 'scar and damage' economy MORE from contracting with the federal government to build low-income homes.

“Can you assure me that not a single taxpayer dollar you give out will financial benefit the president-elect or his family?” Warren asked Carson.

In response, the former GOP presidential candidate promised to not “play favorites.”

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“I can assure you that the things that I do are driven by a sense of morals and values,” he said.

Warren pressed Carson: “It’s not about your good faith. My concern is whether or not, among the billions of dollars you will be responsible for handing out in grants and loans, can you just assure us that not $1 will go to benefit either the president-elect or his family?”

“It will not be my intention to do anything to benefit [Trump],” Carson responded.

Warren shot back: “Do I take that to mean you may manage programs that will significantly benefit the president-elect?”

“You can take it to mean that I will manage things in a way that benefits the American people,” Carson said.

Carson argued that he would not prevent a company linked with Trump from working with HUD if it might benefit low-income Americans.

“If there happens to be an extraordinary program that’s working for millions of people, and it turns out that someone that you’re targeting is going to gain $10 from it, am I going to say, ‘No, the rest of you Americans can’t have it?’ ” he said. “I think logic and common sense probably would be the best way.”

“The problem is that you can’t assure us that HUD money — not of $10 varieties but of multimillion-dollar varieties — will not end up in the president-elect’s pockets,” Warren responded.

Ohio Sen. Sherrod Brown Sherrod Campbell BrownEmboldened Democrats haggle over 2021 agenda Hillicon Valley: Russia 'amplifying' concerns around mail-in voting to undermine election | Facebook and Twitter take steps to limit Trump remarks on voting | Facebook to block political ads ahead of election Top Democrats press Trump to sanction Russian individuals over 2020 election interference efforts MORE, the lead Democrat on the banking panel, echoed concerns raised by Warren.

Trump has an interest in at least one low-income hosing development — Starrett City — which Brown said posed an inherent conflict for the new leader of HUD.