GHW Bush set up NAFTA with all of his cronies....Clinton got elected and said “That’s Cool” and signed it.
Here is Ross Perot on just exactly this in 1992 Clinton/Bush/Perot Debate....2-way street:
https://www.youtube.com/watch?v=Rkgx1C_S6ls
GHW Bush and his trade representative Carla Hill actually signed NAFTA the trade agreement on DEC 17, 1992.
After Congress ratified NAFTA, Bill Clinton signed NAFTA into law. Bill Clinton had nothing to do with negotiating NAFTA.
GHW Bush negotiated and signed NAFTA, but there were objections in Congress and many thought that the investor protections were excessive and the protections for labor and the environment were lacking.
So, rather than scuttle the agreement, it was agreed that the incoming prez Clinton would negotiate parallel agreements or supplemental agreements with protections for labor and environment. These were called the North American Agreement on Labor Cooperation(NAALC) and North American Agreement on Environmental Cooperation(NAAEC).
Clinton would negotiate and sign these agreements and Congress would then ratify all three(NAFTA, NAALC, and NAAEC), after which Clinton would sign them into law.
But to be clear, both Clintons supported GHW Bush's NAFTA.
The problems arose because the side agreements on labor and environment turned out to be toothless and some on the left blamed Bill Clinton.
GW Bush would negotiate CAFTA and Congress ratified. CAFTA replaced Reagan's Caribbean Basin Initiative.
GW Bush negotiated trade agreements with Chile, Columbia, Panama, and Korea. Congress ratified the Chile agreement but refused on Columbia, Panama, and Korea. Obama would renegotiate those three and Congress would ratify.
Most importantly, Congress gave fast track authority to negotiate to Reagan, Bush, and Bush but not Carter and Clinton. Obama was the first dem to be given fast track authority on TPP(by a GOP controlled Congress).
The bilateral agreement that Reagan negotiated with Canada and NAFTA that GHW Bush negotiated caused problems because they were negotiated in secret and Congress had no input.
GW Bush would change that and negotiate his agreements transparently so Congress knew what was in it. Likewise, Obama negotiated TPP transparently.