Can the government or the IRS prove that you are married if you got married in europe with your dual citizenship?

More likely you would prove to them you are married.

I agree... the Burden of proof would be on you in most cases to make. I can see many reasons YOU would need to prove it... and not any where they would want to prove you are. Unless you tre trying to commit polygamy. Shouldn't be hard if you kept your paperwork like you should have.

and not any where they would want to prove you are. Unless you tre (sic)trying to commit polygamy.

Last I checked, bigamy isn't a federal offense. So why would the federal government care? Unless the IRS wanted to prove (for some tax-related reason) that the second marriage was void because of the first marriage (which they were trying to establish).

I am not sure what this question has to do with immigration. But getting married anywhere is considered married (unless it's polygamy or something). If, for example, you file taxes as Single when you're married as of the last day of the year, that would be tax fraud.

I am not sure what this question has to do with immigration. But getting married anywhere is considered married (unless it's polygamy or something). If, for example, you file taxes as Single when you're married as of the last day of the year, that would be tax fraud.

True.

Also, OP mentions being "married in europe with your dual citizenship". I also don't see what the person's citizenship has to do with the validity of their marriage. As far as I know, a citizen or a non-citizen can be married in any European country.

You register a marriage when it happens outside the USA... but I can't remember how , with who or where... its been 23 years. Its never come up in that time since... everyplace has has just taken our word for it.. EXCEPT for the INS who required proof of it taking place.