US Visa for Tourist to Canada

[triumpher83]

Hello
My parents are visiting for 3 months.( arriving in a week).
We were planning to visit USA and apply visa for that once they arrive to Toronto.
Is this possible ? How to proceed for that? And, what documents required ?

 

[steaky]

http://www.canadavisa.com/canada-immigration-discussion-board/us-visa-from-calgary-no-visa-date-available-for-6-months-t430420.0.html