These are very bold looking designs. Thumbtack is a nice touch. Try throwing some more on the map in various sizes. Try some other color combos that aren't red, white and blue - it makes them look too a political campaign . #55 #54 #53 are better with a straight on view of the USA.
#59 is good. thanks for changing up the colors and putting a tilt to it. can you add some more thumbtacks? we want to point out that things are made right here all over the USA.