RE: If only he could come here and do the same for Obama . . .
Depardieu relinquished his French citizenship to escape the onerous 75% tax that Hollande signed into law (invalidated by the French Courts for now, but will return in another form ).
Here in the US, YOU CANNOT SIMPLY RELINQUISH CITIZENSHIP WITHOUT THE IRS AUDITING YOU AND DEMANDING THAT YOU PAY, ESPECIALLY IF YOU ARE AS RICH AND PROMINENT AS HE IS.
Remember this, unlike France, the US claims income that you have from ALL SOURCES, REGARDLESS OF WHERE YOU MADE THE MONEY.
Not entirely accurate, the Vast Majority of Profits to Hollywood come from OVERSEAS and the IRS does not Tax it at all because they keep it off shore in the Grand Caymans. Just like GE.