Brought over an immigrant myself. The fact is you MUST ensure you've done everything correctly. You don't trust, you verify. Diplomats should have known better. People who adopt from overseas need to know. You can't just do whatever you want in terms of bringing new bodies from foreign lands. That's the administrative reality and there's no reason to have exceptions when these people should have been responsible. If you don't have consequences, then people don't follow administrative rules. If you don't have administrative rules and laws, good luck having order, good luck managing. Good luck collecting taxes, good luck having a country.

Why are we so quick to blame the USA, or blame our own country when these things actually aren't all that difficult. There are forms for everything. And where there are challenges, there are lawyers. Can't afford a lawyer or figure it out yourself? Guess what you just proved you're not prepared to bring over an immigrant regardless of their age.