Perhaps the obvious answer is to find a way to convince the government to let him pay the $50,600 in taxes he would owe on that $200k of income if he were a citizen with a SSN...
It is not my position, in fact it's not even relevant to the issue that's being discussed. The original poster said that "the US will want him to pay taxes on that income and has no way to do so at present", so are therefore making PayPal collect on their behalf by freezing their funds.
My position is that it's not PayPal's role to freeze accounts without the specific guidance of the IRS. It's also not PayPal's business how the individual pays his taxes - he may decide to take the entire amount out of the account and then pay it in cash to the IRS. It's not up to PayPal to freeze the entire sum of money because the IRS wants their cut.
http://www.irs.gov/Individuals/International-Taxpayers/Taxpa...
Perhaps the obvious answer is to find a way to convince the government to let him pay the $50,600 in taxes he would owe on that $200k of income if he were a citizen with a SSN...