James Abdnor (R-SD)
John East (R-NC)
J. James Exon (D-NE)
Edwin Garn (R-UT)
Barry Goldwater (R-AZ)
Chuck Grassley (R-IA)
Orrin Hatch (R-UT)
Jacob Hecht (R-NV)
Jesse Helms (R-NC)
Gordon Humphrey (R-NH)
(1/2)
Frank Murkowski (R-AK)
James McClure (R-ID)
Donald Nickles (R-OK)
Larry Pressler (R-SD)
Jennings Randolph (D-WV)
Warren Rudman (R-NH)
John Stennis (D-MS)
Steven Symms (R-ID)
John Tower (R-TX)
Malcolm Wallop (R-WY)
Edward Zorinsky (R-NE)
18 GOP, 4 Dems
Interestingly, while John McCain voted against, Newt Gingrich and Dick Cheney (then a member of the House) voted for it.