More in the cross-post on the MRC's NewsBusters blog.
Thursday night’s edition of ABC World News Tonight with David Muir included a report from ABC News correspondent Clayton Sandell on the growing problem in Colorado with law enforcement encountering motorists that are driving while high on marijuana in the time since the state legalized its recreational use after voters approved it in 2012.
However, at the end of his report, Sandell pointed out that, in a piece that otherwise spotlighted the dangers of marijuana, “different studies disagree on whether stoned drivers are actually causing more crashes.”