Urgent questions
-I am holding H1B, but need to switch to TN with new company; any chance to be rejected at boarder; haven't filed 485
-I need to have two-week notice to my current employer; but I want to inform my employer after I get TN; Is it doable? Or the boarder will take back my H1B I94 when they issue the TN to me
-Can I still do H1B in future, if I can find an employer who sponsors H1B transfer
Many thanks