Biden claimed Monday that he had an Amtrak train key when he was a senator and would ride “about 15% of the time” with engineers on trips home to Delaware. The 80-year-old president shared the memory in Baltimore while touting $4 billion from his $1.2 trillion bipartisan infrastructure law that will be used to build a pair of train tunnels in the city to replace a passage from 1873. “I can say it now since there’s different leadership. I used to about 15% of the time ride with the engineers, for real. And I’m the only guy that I’m aware...