Is gambling online using NT legal for US citizens while overseas?

[AverageJoe]

You can cross Canadian border exchange US$ to C$ and Gamble at Casino Niagara legally.

Is it the same for crossing Canadian board, opening a Canadian bank account, renting an apartment and gambling online?

If so, NT accounts that BECAME illegal can be made legal AGAIN if address/bank account/player physical location is changed to CA. “AGAIN” is because the accounts were created BEFORE the port security act.

Correct?