He's running out of bands who haven't told him no. I'm confused why Kristi Noem was the person helping him out or whatever, she's got nothing to do with Pennsylvania. Guess since she isn't allowed in like 1\3 of her state she has to go to a different one.
I don't know what kinds of packets WiFi calling sends, but I would assume a public IP would be in there somewhere and, at least from a law enforcement perspective I can't imagine it would be too hard to get the address tied to it.