After landing, I will immediately return to USA. I still have two years
to finish my Ph.D degree.
I want to know do I need to apply return permit? and since I won't
stay in Canada more than a week, do I have to apply social security
It is said if I don't apply a ssn, I won't need to pay any income tax.
is it true?
I appreciate any answer and kind help.
wish you all good luck
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