Do I have to enter US within certain date to keep my US visa valid? Like the Canadian Landing Paper? : N E% Y1 m& [; [7 U9 b! d* k0 g9 y x* E) g# x& R5 ~( u
I did not see that on the visa. Or maybe I missed it. ' U# i/ l7 i9 G2 l6 Q+ l- Z& I , B1 B0 L. |5 m4 s2 i0 F; o+ P, t) _