FATCA controls and service providers. The Foreign Account Tax Compliance Act (FATCA) is intended to detect and deter the evasion of US tax by US persons who hide money outside the US.
If the teeth or jaws do not align this is called malocclusion, and this can lead to a number of dental problems. Many times if your bite is off it can cause more pain and destruction than the more commonly recognized problems of tooth decay or gum disease. For patients with a bite discrepancy, it is important to stabilize the jaw and bite before starting any definitive treatment on the teeth (fillings or crowns).
One model guesses that after prey is taken down with a saber-tooth's claws, it rips open the abdomen to cause massive blood loss and death. Perhaps a group of saber-tooths would take down a wooly mammoth (or other megafauna) and then wait for it to bleed out before feeding. Another good hypothesis is that once prey is already held still after being taken down, a solid bite to the throat would quickly take out the windpipe and arteries in many mammals.