Were you a US Resident or Non Resident Alien?
If you were a US resident, then you would include the income earned while a Resident on the US return. After you returned to Canada, if you no longer have US source income, you would not need to file a return. If you do have US source income, that income would then be reported on a 1040NR which TurboTax does not support. However, you could use Sprintax.com to file the 1040NR.
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