Re: US/UK dual citizenship - passport misery
Christep, there are two reasons I can think of.
1) You no longer have to maintain 'the intention to permanently reside in the US'. i.e you can go back to the UK for quite some time, with the option of going back to the US later.
2) You can get a green card for any close relatives a lot easier.
That's about it.
The tax situation with the IRS is a nightmare. They are incredibly aggressive to the point of being criminal, I'm thinking of canning my US citizenship for that reason. Even getting through immigration quicker as you don't get fingerprinted isn't happening now as they fingerprint green card holders. I now enter through the visitors line with the missis as it's quicker.
Always, always, always enter and leave the US on your US passport. This guy was badly advised by the US passport office, if he didn't have his US passport in his hand he shouldn't have left the States.