A pair of Democratic senators on Thursday launched an investigation into the most powerful corporation in the U.S. healthcare system, sounding alarm over allegations that UnitedHealth Group is incentivizing nursing homes to slash care expenses for patients insured by the company.

Sens. Ron Wyden (D-Ore.) and Elizabeth Warren (D-Mass.) wrote in a new letter to the company’s CEO that UnitedHealth Group (UHG) has “been at the center of numerous reports suggesting that it is maximizing profits at the expense of patients’ health and well-being,” including accusations that the company “systematically denied needed care to children and adults with chronic illnesses” and used an artificial intelligence algorithm to deny Medicare Advantage enrollees necessary care.

Most recently, the sena

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