Obama has lost his Mojo !
During my one and only visit to Europe, was being driven around in a car by some Europeans, and of course it did not take long for the America bashing to begin. After a few minutes of bashing, I just calmly told them that I was fully aware of the history of Europe. Told them that Europeans have been killing each other for over 2,000 years. Their response was something about how Americans kill each other via the death penalty. Told them that only occurs in Texas.
I don't think having the advice of the Mexican Consulate would have made any difference in this guy's trial nor guilty verdict. From what I've read, there does not seem to be a whole lot of room for doubt about what occurred nor who the perpetrator of the crime was.
Speaking for myself, having someone from the Mexican Consulate there to "help" the defense, particularly in the case of someone who has lived here in the US since the age of two or so, would probably make me if anything less likely to have a favorable opinion of the defendant.