You failed to include a very important comma. It should read, "You screwed up, America". The way you wrote it provides for a different contact altogether from the intent of your meaning. This was covered in 4th grade English.
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This is a common and typical failing among ignorant Trump supporters (is there any other kind?). They are lazy and lack basic knowledge of all things. They pay little or no attention to detail, have no pride, care not as to how they present themselves. They are filthy, low level humans with low IQs. It is no wonder why they support someone who is also ignorant, corrupt, who is also a bottom rung individual.