Earlier quoted context omitted.
Yes, the EU is ahead, but just like every other part of the future it is unevenly distributed. Some country in Europe will pioneer a concept, others will follow, some faster some slower. The US usually catches on long after the concept has already become normal in a fair chunk of the EU. As for your constitution, America gets it right on paper, but in practice God (the Christian one) is all over American politics, wh…
So really you mean the Netherlands are ahead of the US in LGBT rights. I'm curious about what else the US should be doing. How is the Netherlands better?
As for how NL is 'better' than the US: It's a ridiculously small country and very densely populated so what works here would likely not work as well in places like Canada or the US, but as mentioned above I think coalition politics (het poldermodel) is an important part of making sure that minorities do not easily become the football of dominating majorities. Both large US parties would be considered right-wing here (roughly VVD), the US has no functional left which is a residue of the McCarthy years and the cold war. Somehow the US associates 'left' in politics with 'communism' and that has kept a very large chunk of the US population without representation.
In NL it is very hard to find any substantial chunk of the population without representation. We also don't jail 1% of our populace.
That said there is plenty of room for improvement, we still have corruption, racism, crime and so on at levels higher than what I'm comfortable with, and our government is excellent at wasting money, an area they are slowly improving on but in my opinion too slowly.