I agree with the Weekly Standard;he made this up. That is if Joe Biden even saw/approved this thing. Okay, it's possible the senators said they'll be in my state and Biden screwed up and said "district." But it's a really weird and improbable mistake for a former U.S. Senator to make.
And WS is also right that NO Republican Senator is going to tell Biden this, EVER! The "district" mistake reminds me of the time a liberal listener to Sean Hannity's show called and said he owned a Honda Prius (Toyota makes the Prius). Hannity replayed it over and over for months, if not years. This one's a keeper