It may surprise some, but, as  a U.S. taxpayer, you should generally report your worldwide income on your U.S. tax return.  

Others may be surprised that they are required to file a U.S. tax return, and in doing so, they are simply complying with the rules and do not owe any additional tax.  

Filing a regular U.S. tax return vs. filing a non-resident tax return should be evaluated, if applicable.  Just because a special situation applies to you, does not mean a special or additional tax.  

Reporting the appropriate information may not cost you any more in tax dollars, and may prevent you from exposure to thousands and thousands of dollars in potential penalties for failure to file and report the related information.