Mostly NGOs unaccountable to the American people. Much different when elected officials are involved. I consider breach of oath of office a very serious matter, especially when the top level of government is involved. Anyone working to cede American sovereignty to some unaccountable shadow government is a traitor and deserves the harshest of treatment.
This appears to be a growing "pattern and practice" -- the U.N. has a habit of employing NGO's generously to leverage their personnel, budgets, and research capabilities. For example, European and Japanese governmental and NGO's are behind the international gun-control regime the U.N. is pushing while looking right down Americans' throats. Lots of murmurs about "conforming laws and practices" to international needs, etc. etc. -- and when the NRA attended one of their planning conferences in 2002/3 and tried to raise a point, they got blown off with a line about needing more to "apply lessons learned". I.e., we already know what we think, so shut up.
In fact, the U.N. could almost become a hive of officially-sanctioned NGO's supported by budgets slurped off constitutional nation-states.
And they're all very Left.