President Joe Biden appeared to slur his words once again as he delivered remarks at a campaign rally on Wednesday. Biden’s string of errors in a speech at the Pieper-Hillside Boys and Girls Club in Milwaukee marks the latest in a litany of vocal gaffes for the Commander-in-Chief, and has contributed further to concerns over his “mental acuity” ahead of this year’s election. He said: “Look, the communities everywhere at this Boys and Girls Club… I’ve been a gigantic supporter of Boys and… biggest in the country, but when I was a senator I provided a lot of money when… during the crime sprees g…