Sen. Bill Cassidy, R-La., the ranking member of the Finance Subcommittee on Fiscal Responsibility and Economic Growth, said at a hearing last week that lawmakers must consider “what data is appropriate to collect, what limits should be placed on the groups that collect that data, and restrictions on how that data is sold or transferred to others.” Law enforcement agencies typically acquire such personal data by exploiting a loophole in the Electronic Communications Privacy Act that requires them to meet certain legal standards when requesting data from a service provider, but not from a third-party broker.