Union officials say it was the striking workers, not the president, who were ultimately responsible for those record contracts. But several also credit Biden’s embrace — capped by his decision to stand with the strikers — for providing political cover that helped secure a deal. That embrace was not without risk. The auto executives Sperling called that day are instrumental to Biden’s economic and clean energy agenda. General Motors CEO Mary Barra is widely considered one of his closest corporate allies. They were not just surprised that Biden went to the picket line, they were upset. Some people in the...