Sen. J.D. Vance, the Ohio Republican former President Donald Trump has picked as his running mate, was shamed this week for the questionable claim that undocumented immigrants caused his mother’s addiction to drugs. An X community note was added Wednesday to a Vance 2022 campaign ad called “Are you a racist?” in which he suggested undocumented people were the lone source of the narcotics that took over his mother’s life. “I nearly lost my mother to the poison coming across our border,” Vance says. “Joe Biden’s open border is killing Ohioans with more illegal drugs and more Democrat voters pour…