For those of us who remember Mexico’s golden days — crime was not a real worry if you stayed in the decent parts of any city, more personal liberty — it’s still difficult to fathom Mexico’s slide into lawlessness.That point was hammered home earlier this year when the FBI released a statement asking for help in locating an American resident from Laredo who had gone missing on a trip to Monterrey (late February). Two months prior, two cousins, ages 18 and 27, also went missing in Nuevo Laredo.Reynosa isn’t Nuevo Laredo, but it, too, has had its problems of late.Not ...