Yeah, not going to happen. The VA and MD counties surrounding DC are some of the richest in either state. Dems in the states wouldn’t want to loose them for economic and political reasons. Republicans in MD don’t want DC voting with them...it’ll wipe them out. And DC CANNOT become a state with two senators. The best situation is the one we have now.
There are no republicans left in Maryland, save for two counties at the extremes.