Here's Trump being asked about statehood last summer. Source
CHUCK TODD: All right. Toss you a quick Facebook question. Michael Martinez asks, “Residents of the District of Columbia currently pay federal taxes but have only a non-voting delegate in the House of Representatives, no representation in the Senate. Should that policy continue as is? Should D.C. become a state? Should it not have to pay taxes? Should it be treated like Puerto Rico–”
DONALD TRUMP: Well, bas—
CHUCK TODD: “How should D.C. residents be treated —”
DONALD TRUMP: I have a conflict of interest because I’m building the greatest — you know, I’m building at the old post office I think what will be maybe one of the great hotels in the world —
CHUCK TODD: So I’ve heard.
DONALD TRUMP: It’ll open. And, by the way, unlike our government, we’re under budget and ahead of schedule. Isn’t that a nice thing to hear? You don’t hear that. Just like the wall will be under budget and ahead of schedule. And nobody’s getting through that wall. Believe me.
CHUCK TODD: All right.
DONALD TRUMP: But —
CHUCK TODD: So the District.
DONALD TRUMP: So I have a little bit of a conflict.
CHUCK TODD: State or not?
DONALD TRUMP: I would like to do whatever is good for the District of Columbia because I love the people. You know, it’s funny. I’ve really gotten to know the people, the representatives, and the mayor, and everybody. They’re really special people. They’re great. And they have a great feeling. So I would say whatever’s best for them I’m for. I have a total conflict of interest.
CHUCK TODD: So you’re okay with either way? If they want statehood, you’re for statehood?
DONALD TRUMP: I mean, people are talking about that. I’d look at it. I’d certainly look at it —
CHUCK TODD: Or give them back to Maryland. Or do something.
DONALD TRUMP: I would look at a number of things. And something would be done that everybody would be happy.