A senator active in overseeing compliance with the DATA Act is again pressing three dozen large agencies to report to him on their progress in implementing that 2014 open data law.

“The efforts of each agency are essential to achieving the aims of this law. As I introduced this law in Congress, I remain strongly committed to robust oversight of DATA Act implementation and to ensuring that federal agencies are able to fully implement this crucial law,” Sen. Mark Warner, D-Va., said in letters to the agencies.

He had sent similar letters earlier this year but those requests, and agency responses, occurred before OMB issued implementing guidance and the Treasury Department published data standards in the spring.

In the wake of those actions, Warner’s office said, “agencies have the necessary information to begin converting their spending information into open data. Today’s letter by Warner notes some common challenges identified by the agencies in their initial responses, and requests each agency’s resubmitted plan based on this new guidance.”

The letter says that Warner “heard several common challenges. In particular, multiple agencies have highlighted both resource constraints and issues related to the use of legacy financial management systems that will require some agencies to bear greater costs or update their systems in order to implement the law.”