This sort of thing is the purview of the UN - at least in theory.
We contribute huge sums of money to the UN for that purpose and then turn around and spend more money to fund the actiivity directly.
Meanwhile the UN spends our money to promote globalism, anti-American sentiment and anti-semitism.
And why is this issue the problem of the American taxpayer to begin with?
The best thing that could be done with the State Department is to shut 95% of it down and pass responsibility for visas and passports to Homeland Security.
Trump needs to hear about this.