I assume this is because some countries make it really easy to get citizenship. It would be quite a loophole to just hop over to country X for a few months then onto the US
Then it would make sense to list those countries' dual citizens or naturalized citizens as ones that would take more scrutiny.
But Any country other than the US? Heck, I know what I'm going through with immigration here in Norway, and I have one of the easier immigration avenues - marriage. Work and school are quite a bit more difficult. It usually requires one to live here for at least 7 years first: Marriage can cut that in half. That comes with things like the possiblity of having our house inspected so that the authorities are convinced we are living like a married couple and possible interviews with my spouse. Some countries have a more thorough check.
It just isn't the bureaucratic lottery nightmare that it is in the states. That doesn't mean that it is easy, merely better run and reasonable.
It's not particularly trivial to become a citizen of the UK. It involves living in the country for years and passing a test. This is in line with most other countries.
But Any country other than the US? Heck, I know what I'm going through with immigration here in Norway, and I have one of the easier immigration avenues - marriage. Work and school are quite a bit more difficult. It usually requires one to live here for at least 7 years first: Marriage can cut that in half. That comes with things like the possiblity of having our house inspected so that the authorities are convinced we are living like a married couple and possible interviews with my spouse. Some countries have a more thorough check.
It just isn't the bureaucratic lottery nightmare that it is in the states. That doesn't mean that it is easy, merely better run and reasonable.