this idea.

I certainly expect tourism here to decrease.

Musicians went on a tour strike until our politicians got their shit together on guns, if that would make any sort of impact.

Their homicide rate is 5 times worse then the US.
Mexico 24.8 per 100,000 vs 5.3 for the US.

And the EU's rate isn't radically different then the US rate, 3 per 100,000 vs 5 per 100,000

https://en.wikipedia.org/wiki/List_of_countries_by_intentional_homicide_rate

which includes Russia (rate 9, and a bigger population than any EU member) and Ukraine (6, and a significant population). Of the largest EU countries:
Germany 1.0
UK 1.2
France 1.3
Italy 0.67
Spain 0.7
Poland 0.8

if it's a democracy, not other countries. It's up to American voters to get rid of the national or state politicians who do the NRA's work.