WASHINGTON — A Senate vote to halt a Medicare pilot that uses artificial intelligence to approve or deny care failed along party lines on Thursday.

Republicans voted to block consideration of a Democratic-led measure, which would have stopped the Trump administration from employing prior authorization in original Medicare, where the practice is rarely allowed. The vote was 46 to 50.

The White House had pushed back against the Democratic bill. Medicare officials gave a handout to lawmakers’ offices on Tuesday outlining what they say are the benefits of the test, known as WISeR. 

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