U.S. Sen. Al Franken said Wednesday he plans to pursue legislation or federal regulations requiring encryption of all laptops containing private medical information, after presiding over a hearing on aggressive debt collection practices in several Minnesota hospitals. Franken questioned executives from Chicago-based Accretive Health Inc. and Minneapolis-based Fairview Health Services. The issue came to light when an unencrypted laptop containing private information for 23,500 patients was stolen from an Accretive employee's car.