Every state but Missouri has opioid drug tracking. Why are senators against it?

Missouri is among the 20 worst states for drug overdose deaths, but it was the only state left without a statewide prescription drug monitoring program. This week, the Missouri Senate attempted to defund one set up by Gov. Eric Greitens.Greitens ordered the creation of a statewide prescription drug monitoring program, or PDMP, last year amid a growing opioid crisisaffecting Missouri and the U.S.