House Minority Leader Hakeem Jeffries on Friday rejected as "ridiculous" an accusation that Democrats want to let pivotal Obamacare subsidies lapse in order to deal a political blow to Republicans .

"Shame on you," Jeffries, D-N.Y., said at one point as he pushed back on that notion in a fiery exchange with CNBC's Becky Quick on " Squawk Box ."

The clash came less than six weeks before those subsidies — enhanced tax credits that reduce health-insurance premiums under the Affordable Care Act for millions of enrollees — are set to expire.

Quick had questioned why House Democrats are seeking a three-year extension of those subsidies, which Republicans won't support, instead of a one- or two-year deal, which some might.

When Jeffries noted that Senate Minority Leader Chuck Schu

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