Ten of the squad were born in America, while nine have played in the country's domestic competition.
Squad: Mark Cantoni (Dalby), Andrew Durutalo (USA Eagles), Bureta Faraimo (Mackay Cutters), Gabriel Farley (Southampton Dragons), Kristian Freed (Connecticut Wildcats), Mike Garvey (Ipswich Jets), Roman Hifo (Mangere East Hawks, New Zealand), Danny Howard (Wentworthville), Stephen Howard (Tuggeranong Vikings), Luke Hume (New York Knights), Judah Lavulo (Cabramatta), Joel Luani (Wests Tigers), David Marando (Belrose), Ryan McGoldrick (Salford City Reds), Clint Newton (Penrith Panthers), Mark Offerdahl (Connecticut Wildcats), Joseph Paulo (Parramatta Eels), Junior Paulo (Parramatta Eels), Craig Priestly (Southampton Dragons), Matt Petersen (Cudgen Hornets), Tui Samoa (Redcliffe Dolphins), Matt Shipway (Newcastle), Les Soloai, Lelauloto Tagaloa (Hawaii Chiefs).
Warrington have secured their place at the top of Super League with a one-sided 30-point victory over title challengers Wigan at the Halliwell Jones Stadium.
Hull KR are set to introduce a reserve team for the 2017 season.
Widnes coach Denis Betts is set to be named as an assistant coach with England.
Hull FC stand-off Jordan Abdull has joined Featherstone on a one-month loan.