OKLAHOMA CITY (AP) — A comprehensive study of the United States withdrawal policy shows that Oklahoma's Constitutional Reserve Fund meets adequate and best-practice levels.

The study conducted by The Pew Charitable Trusts focused on the formal procedures of withdrawing money, The Oklahoman (http://bit.ly/2oi5CH1 ) reported. It shows six states don't have any requirements to withdraw from their funds, meaning legislatures can empty the funds at any time and for any reason.

"In an absence of conditions, states have no context for why they were saving money in the first place," said Pew researche...