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The correct answer is that Bill Clinton signed HIPAA into law. The Health Insurance Portability and Accountability Act (HIPAA) was enacted on August 21, 1996, during Clinton's presidency. This legislation aimed to improve health care efficiency and protect patient privacy regarding their medical information.

The significance of HIPAA cannot be understated, as it established vital privacy and security provisions for health data, setting national standards that healthcare providers and organizations must follow to safeguard sensitive patient information. Therefore, understanding that Bill Clinton was in office at the time of the signing is essential to grasp the historical context of this important legislation.