As the legislative representative for his local union, Gabe Christenson, a longtime freight railroad conductor, worked hard to help elect Joe Biden president in 2020. “I have shirts from me campaigning — blue-collar Biden shirts,” he said. “I knocked on doors for him for weeks and weeks.”But since Monday, when President Biden urged Congress to impose a labor agreement that his union had voted down, Mr. Christenson has been besieged by texts from furious co-workers whom he had encouraged to support the president. “I’m trying to calm them down,” he said.Mr. Biden said he was urging action to avoid a nationwide strike that would threaten hundreds of thousands of jobs and that the industry estimates would cost the economy more than $2 billion per day. The House of Repres …
