Duterte would have done us a favor if he pulled a North-Korea-style stunt, by letting the senators come over and then keeping them.
By the way, at this time a year ago, my wife and I were in the Philippines, visiting her family. We flew in to Ozamis City, on Mindanao, Duterte’s home island. The Ozamis airport is small, seeing just a few flights a day, with just about everything housed in one large building. Everyone waiting for the outgoing flights sits in one room, and they have a lifesized cardboard cutout of Duterte standing in the front of the room; I suspect that is to make sure everyone behaves.
And not just those two. :^)