Thank you for your response.
I found this but I doubt it sources.
Are the Canada Pension Plan and Canadian Old Age Security Benefits taxable? If they are, please tell me where they should be entered on Form 1040.
Benefits paid under the Canada Pension Plan (CPP), Quebec Pension Plan (QPP), and Old Age Security (OAS) program to a U.S. resident are taxable, if at all, only in the United States. According to the U.S. - Canada income tax treaty, taxation of these benefits is a residency-based issue. U.S. citizens or green card holders who reside in Canada are not subject to U.S. tax on this income.
These Canadian benefits are treated as U.S. social security benefits for U.S. tax purposes. Thus, under section 86 of the Internal Revenue Code, the portion of the benefits that is taxable will depend on your income level. If your total income is above certain limits, a maximum of 85% of your benefits will be subject to U.S. tax. Any benefit under the social security legislation of Canada that would not be subject to Canadian tax if paid to a resident of Canada is not subject to U.S. tax.
Canadian benefits that are treated as U.S. social security benefits are reported on line 20a and 20b of Form 1040, U. S. Individual Income Tax Return or line 14a and 14b of Form 1040A.