Get your taxes done using TurboTax

We don't know if it is US income or income re-sourced under a treaty to be US income or if there is something else going on.

You should report the income as reported but you can't file a foreign tax credit for US tax. If you are showing US tax paid, that may need to be entered under other tax paid rather than foreign tax paid.

If the US tax is reported on the 1099 and entered, great. If not, you will need to enter it as other tax paid not on a w2 or 1099.