quite. For my SIPP provider, I've ended up having to go with one of the more expensive providers, when all I need is one of the cheap diy ones, because the cheap diy ones don't allow US citizens to open accounts

When I called to change my address for an old work Fidelity IRA years back, the panic in the advisors voice, as he informed me I'd no longer be able to contribute to the fund, was kinda funny. Considering I'd never personally contributed to the account in the first place.