Setting the Record Straight...
When I am hitting the streets of Monterrey, I have never experienced the "narco terrorist" effect you speak of, and that's why I have absolutely no concerns about visiting the bars on Villagran, and along Madero, which must be the supposedly seedy neighborhoods referred to. Frankly, to me, they are relatively tame neighborhoods compared to my own home city in the USA. Fear simply doesn't enter into my thinking there. In ten years, I have NEVER experienced any activity there directly that justifies "fear" of the area. It's among the oldest of areas in the city, and not akin to a place like Colonial Del Valle, kind of seedy, certainly...but, it's old and run down, "seedy" appearance doesn't translate in my having fear of the area with respect to my own actual experiences.
The violence and influence of the drug cartels is rampant in Mexico. But, the media capitalizes on their reporting of drug cartel activity, and they hype it for profit, especially the US media. Not only that, but most of the violence in Monterrey these days, with respect to the "dangers" is from "free lancers" committing crimes of opportunity, and the acts of those perpetrators are not sanctioned by the drug cartels, nor do those crimes relate to drug cartel activity. The media and the police like to "blame" the cartels for those acts, but when those acts are investigated they're are determined to be independent criminal acts, unrelated to Cartel business.
The law with respect to FDA regulations, and their relationship to US Customs Service responsibilities, is not in question. Foreign manufacturing facilities are required to be inspected by FDA in order to be FDA approved, which they are NOT. There is no ambiguity with respect to those laws. The laws are written straightforwardly, and I have no doubt the statutes exist by which you can be charged for bringing-in generic medications that are not backed up with a prescription.
The ambiguity is in whether the Customs service enforces those laws as a matter of practice...
I have only heard of ONE testimonial in my entire experience with mongering for the last 30 years that mongers can freely pass through US Customs with prescription medications without a prescription. I am not calling into question the validity of those experiences. I am merely saying that it is contrary to what I have heard for the last thirty years.
But, I agree with Bbond. While I appreciate the reporting of one monger's experiences with respect to their declaring prescriptions and not having any repercussions, I would like to hear of a number of similar experiences, not because I doubt this single experience, but so I can detect a reliable trend that the practice by US Customs is the rule rather than the exception. But, other testimonials are seemingly illusive, which may suggest that the practice may not be a reliable operational guideline at all ports of entry that we all can count on.
Consider this, why does US Customs advocate your reporting of those medications upon re-entry if they are not scrutinizing your possession of prescription generic drugs in that category? They do not question your possession of prescriptions filled in this country. You do not have to declare prescriptions filled in the US, only prescription drugs filled in foreign countries. So, they are scrutinizing your possession of those generic prescription drugs whether they are enforcing the law with penalties or not.
As for being afraid of being "yelled at" by Customs Agents. In all of my travels worldwide for the last 30 years, I have never witnessed that kind of behavior by US Customs Agents. It isn't about being "frightened," by Customs Agents supposedly "yelling" at us.
It's about avoiding the hassles, ie: the delays, especially when connecting flights are scheduled so closely. In addition, it is simply foolish to court legal action being perpetrated against you when it can very easily be avoided with a little clarification of their guidelines at US Customs, along with a decent number of substantiating experiences from more than one person.
Having this discussion, and soliciting more than one example of mongers freely importing prescription drugs without a prescription through US Customs, is intelligent thing to solicit. It is not a frivolous or foolish endeavor, nor is it prompted out of "fear" of being "yelled at" by US Customs Agents. So far, we have only one testimonial that this is norm rather than the lucky exception, or that the practice by US Customs isn't regional rather than universal at all points of entry.