> For instance they barely have any manifesto, instead presidents have manifestos, but that's meaningless if the party members don't agree hence why shit is always being "blocked by Congress" in the USA when you rarely see that in other countries

I don't think that's really unique to the US. That's an inherent problem with presidential systems–the President and Congress are independently elected, and so they can be controlled by different parties, and even being controlled by the same party is no guarantee they will cooperate–and presidential systems are very common in the Americas–most Latin American countries have the same system. I'd be surprised if Latin American countries don't have some of these same problems with "political gridlock" that the US does.