There is no question about it. Same with the District of Columbia and various other places that should arguably already be states. They'd be likely to provide Democratic Senators, so there is a gigantic roadblock to keep this from happening.

Likewise, the promise of 2 Democratic senators is the main reason that Democrats are pushing for DC statehood rather than the more logical outcome, which would be retrocession of the city of Washington to Maryland.

It's more difficult to make an argument against Puerto Rican statehood, but DC is expressly not a state, and should either remain a federal district with no voting representation or be part of Maryland (as stated elsewhere).