As soon as I glanced at United States v. Rodriguez, case no. 07-10217 (9th Cir. Mar. 10, 2008) today and realized I would have to defer drafting a blog post until later, I had a pretty good idea I was going to be preempted, and I was pretty sure by whom. Sure enough, California Appellate Report and Decision of the Day both have excellent posts on the case, so I’ll just briefly explain the case and then use my fellow bloggers’ posts as starting points for my discussion. The issue is this: if a person in custody gives an ambiguous response when asked if he waives his Miranda rights, is…