Do I have to enter US within certain date to keep my US visa valid? Like the Canadian Landing Paper? : k2 |+ z, @# Z3 ~8 @ 9 k6 V% g6 S1 ?$ {! X7 mI did not see that on the visa. Or maybe I missed it. - \- _' V: _- O" a( v; H- G! V3 Y. N8 C6 E0 z& ]( B