Warren and group of senators demand Google answer how it will use medical data

2020 candidate, Richard Blumenthal and Bill Cassidy express concerns over Project Nightingale in bipartisan letter

The Democratic presidential candidate Elizabeth Warren has joined a bipartisan group of US senators to express "serious concerns" over Project Nightingale, Google's secretive acquisition of the health records of millions of Americans that was exposed last week by a whistleblower.

In a joint letter written by Warren, fellow Democrat Richard Blumenthal and Bill Cassidy, a Republican from Louisiana, the three senators demand that Google provides answers to a series of questions.