During his tenure, he encouraged the use of computer technology in all aspects of SSA's operations. Of particular interest to Halter was the use of the Internet, both as an informational service and a service-delivery method. He pushed the Agency to accelerate its adoption of Internet service delivery and maintained constant pressure on the organization to find new and innovative ways to use the Internet in its business operations. From January 21 to March 28, 2001, Halter served as Acting Commissioner of the SSA during the first months of the administration of George W. Bush. Halter re-entered the private sector by joining the board of directors of several companies in biotechnology and information technology, including Akamai Technologies, webMethods, InterMune, Threshold Pharmaceuticals and Xenogen.