Trump Is Said to Seek Repeal of California’s Smog-Fighting Power (1)

The Trump administration will seek to revoke California’s authority to regulate automobile emissions—including its mandate for electric car sales—in a proposed revision of Obama-era standards, according to three people familiar with the plan.

The proposal, expected to be released this week, amounts to a frontal assault on one of former President Barack Obama’s signature regulatory programs to curb greenhouse gas emissions that contribute to climate change. It also sets up a high-stakes battle over California’s unique ability to combat air pollution and, if finalized, is sure to set off a protracted courtroom battle.

The proposed revamp also would put ...