Tolkin's been called into USMNT's January camp, with games against Serbia and Colombia. Also Aaron Long.
It seems to be mostly an Olympic level roster, with a lot of young guys and a few veterans sprinkled in. Slonina, B. Vazquez, Alan Sonora are all getting looks. Zendejas, who plays for Club America, has been called in and CA is releasing him for the Serbia game. He's a dual national (as is Vazquez) who reportedly has said he wants to play for Mexico, but he's tied to the USA and hasn't yet filed a one time switch.
https://www.espn.com...or-january-camp