This is one of my favourite games of the jam so far, I'll be detailing more scores for your game and going in a bit more depth because that sort of feedback is the best.
Fun - I love this games mechanics so much. The physics and the rules of movement being the only things given to you mean that as you play through the game you create interesting solutions to problems which is some of the best fun. This can be hard to do well but this game does it very well. This is certainly the Goat Simulator of this jam. 5/5
Simplicity - Without a tutorial the game is simple enough to pick up and understand that it took me less than three seconds to figure out what I had to do. Starting with Mexico and the USA was also an amazing design choice because the context of Mexico, America, and the wall conveys the goal almost instantly. 5/5
Visuals - I do quite like the visuals. Though I also recognize many from the asset store. This is not much of a detriment to the game though as they mesh so well together that you can barely notice in some levels. It is making the visuals fit that help to make a game immersive and this game does it well. 4/5
Sound - The sounds were well made and provided solid feedback on what was happening. It was insanely satisfying to get bugs on a flag mostly because of the satisfying sounds. 5/5
Creativity - I would never in 1000 iterations of this jam ever had thought of a game so simple yet compelling. 5/5
Topic - The bugs and historical references cemented the topic and gave the game quite a bit of charm. 5/5
WOWIE - As my overall score I got the average from my previous ratings. For this game that score is 5/5.
I love this game so much, it would be detrimental not to take what you have made and learn from it. For three days or so of development it was amazing. It is a shame you don't have any other games posted because I would have checked them out.
I can understand why some people may not like this game but I certainly do. Keep up the amazing work!