It’s still unclear what caused the February 3 train derailment in East Palestine, Ohio, but Donald Trump and his opponents aren’t letting the tragedy go to waste politically. The former president criticized the Biden administration’s response on Wednesday during a visit to the rural Ohio town, as Democrats concoct a progressive parable of corporate greed.

Local public anger is boiling amid uncertainty about what caused Norfolk Southern Corp. to derail, how long it will take to clean up the mess and what the long-term environmental damage might be. Enter Mr. Trump, who on Wednesday donned a Superman cape and handed out bottled water while denouncing Biden officials. “They weren’t doing anything for you,” he said. “They didn’t mean to do anything for you.”