I want red to be the predominant color. A bright red that pops. White should be the next-most-prominent color. Blue should be used only sparingly.
The target audience is 20-35 year-old citizens of India, the Philippines, Brazil, Nigeria and Mexico who want to travel to the United States for tourism, and who seek assistance in securing the U.S. visa they'll need to do so.
I'd like a modern, clean look.
I've attached a mock-up that could serve as a starting point for your designs. It's meant (mainly in the shape of the border) to slightly resemble a U.S. visa, with the stars and stripes in the upper-left corner suggestive of the U.S. flag. But do feel free to try other ways of speaking to my target audience.
I'd welcome the chance to see designs with a red background as well as versions with a white background.
As for the the slogan ("Let's Go") - I would be happy to see some design options with it, and some without it.