That's funny. The most international president ever now wants it both ways: ultra domestic and ultra international.
My take on it is that it's probably for a vote, but another angle on it is money. I live in a state where Anishinabe and Dakota people live. If you can show you are part Indian, like down to about 1/32, you are eligible for some serious money derived from, among other things, casinos. Hugely valuable scholarhips and stipends are available. I know a couple of people who qualify, and one family has several kids who are all going to college free.