I’m returning to the U.S. after 5 years, and need to buy a house. How can I get the lowest mortgage rate?

Dear Big Move,

I am a longtime U.S. federal employee, and I will be returning to America after five years serving overseas. I hope to buy a house, and currently have nearly no debt and a high credit score. 

When I return to the U.S., I will have to buy a car or two, and do all of the things associated with moving…