In every state in the U.S., drivers can be punished for refusing a breath test when they're suspected of drunk driving.

In every state in the U.S., drivers can be punished for refusing a breath test when they're suspected of drunk driving.

But our investigation found they are often unreliable, even as they help convict thousands of a crime they may not have committed.https://t.co/lw14T7x81Q

— The New York Times (@nytimes) November 3, 2019