The manifest lists Hugh as age 16 and John as age 30 and says they were going to join friemd W.A. Blair, 49 Ellen St., Winnepeg, Man.
In the 1916 Canadian Census in Moose Jaw, Saskatchewan, there's a Hugh Boyd Crawford, age 22, with father John Crawford, age 38 and John's wife & younger daughters.
If that information matches, they may not have stayed in the US.