|Scott Pruitt, the head of the Environmental Protection Agency, made a big announcement this week: The E.P.A. will reconsider, and most likely roll back, Obama-era automobile standards for greenhouse gas emissions and fuel efficiency. The decision goes beyond what even the automakers had asked for, and sets up a showdown with California over air pollution rules.|
|But headlines in recent days have focused on Mr. Pruitt himself as he faces a growing list of potential ethics scandals. It can be hard to follow every development, so let us catch you up on some of the biggest ones dogging Mr. Pruitt this week.