Lewis, Section 5 (which repeals Section 102 of the DMCA) does this per Ernest:
Title I: WIPO Copyright and Performances and Phonograms Treaties Implementation Act
This part does two separate things. Section 102 brought the U.S. into alignment with WIPO on the treatment of sound recording under copyright law.
BrandonH's link above is also helpful.
Okay, but in which sense was the US previously different? What got changed/would change depending on this vote (major points only)?
I guess I could figure this out myself... but you would have to wait til friday for my vote.