So I was thinking about the locks..since I am coming in from the international sector, I will firstly of course not need any of those special TSA locks while I am outside US.

Then in Seattle, when the immigration officer will check me, I will need to open the bags in front of him, where he will check. Then he will say OK and I'm guessing he will put some OK stamp on my bag which will waive any checking later on in Denver/Montana. This sounds right I guess. What do you say?