G.M.’s move appears to follow a pattern by Ms. Barra of responding quickly to changes in the White House. It was Ms. Barra who, in the early days of the Trump administration, met with the new president in the Oval Office and asked him to roll back the tough Obama tailpipe pollution rules.Four years later, her company’s evident about-face has won her the good will of those working to put those rules back in place.“This move by G.M. is a big deal,” said Margo Oge, a former Obama administration official who played a lead …
