Gov. Rick Scott cleared another milestone as chief executive Thursday – vetoing his first bill passed by the Legislature since whacking a record $615 million from the state budget last month.

Scott has been remarkably supportive of the Legislature’s actions, signing about 150 bills without a single veto. But Thursday he rejected a measure (SB 1992) that would have eased criminal background-screening requirements for volunteers working with seniors.

Scott said eliminating such oversight posed a threat to vulnerable older Floridians.

“That is a risk not worth taking,” Scott said in his veto letter.

The legislation had been pushed by Sen. Ronda Storms, R-Brandon, and a pair of Senate committees as a cost-saving move. Supporters said a 2010 law revamping background checks requires even volunteers to undergo screening and fingerprinting – which can cost close to $45 per-person.