"The Trump administration appears to have abandoned its initial strategy for defending the rollback of Obama-era clean car rules from court challenges, according to three people with knowledge of the situation.
The administration was previously rushing to finalize the rollback in early summer. Experts have said that would have given Trump lawyers more of a chance to defend it in court during the president's first term in office.
But the administration seems to have forsaken that aggressive timeline, and the rollback is now expected to be completed after Labor Day, according to the three sources, who agreed to speak with E&E News on the condition of anonymity.
'We've been told not to expect the rule to come out until later in the year, probably after Labor Day,' one source said."