Right now legislators in Missouri are discussing whether the large predators should be considered wildlife or as an invasive species. Then there's the fact that the mountain lions were there before settlers, so who really is the invasive species?
It is illegal to kill mountain lions in Missouri, but the senate would like to change that. Since 1994 there have been 28 sightings, and half of those happened in the last year. The animals are considered too dangerous to not make some efforts in controlling the population.
If the bill passes, it would be legal to kill mountain lions in Missouri, as long as the carcass is turned in within 24 hours. From CBSStLouis.com .