Statehood for D.C.?

About the “Who represents DC?”
The have a commissioner like Puerto Rico does. Its not much, but it is better than
American Samoa
Guam
US Virgin Islands
North Mariana Islands

Who represents them?
Who will represent them when DC and PR become states?
How will they vote for President?

This is not a DC or PR (other thread) issue. I should be an all Americans issue.