Sean,It does not read well at postage stamp size (re Amazon size). Look at other thriller books especially the big boys, notice the type face for thrillers is bolder and dominant, I can't read your name, and to be honest the White House is way over done in the trade. Look at this site to get some really good ideas - The Book Designer Good luck.
Greg: Thanks for your feedback. I really appreciate it. I will take a look at other covers, re-evaluate the font choice and take another crack at the cover.