For roughly a year and a half, California state and local authorities have been locked in a power struggle with the Trump administration over who gets to regulate oil production off the coast of Santa Barbara, a beach town beloved by surfers, swimmers, tourists, and nature lovers—and by extension, the entire West Coast.

The fight revolves around Sable Offshore, a small Houston-based company that, on the order of the Department of Energy (DOE), recently resumed pumping oil through an offshore pipeline that had been out of service since a disastrous 2015 spill.

“WELLS FLOWING…$ALES METER ROLLING…AMERICAN OIL FROM AMERICAN $OIL!” a sign in front of one of Sable’s onshore facilities now reads.

The DOE justified its intervention as an effort to boost domestic energy production in the name of national security. Foes of the pipeline restart say it’s an attempt by the Trump administration to quash states’ rights and eviscerate environmental regulations, and maybe troll a blue state in the process.