Chinese Sale of Nuclear Technology
A strong majority favors the US taking a strong stand against China's sale of nuclear weapons technology, including imposing economic sanctions.
A major controversy in the US-China relationship has centered around US frustration with China's sales of nuclear weapons technology to aspiring nuclear powers. A very strong majority supports the US taking a strong stand on this issue. A 1997 Gallup poll found that 72% believed it important for the US to "take a strong stand" on "China's sale of nuclear weapons technology internationally." 
An even stronger majority has supported limiting trade with China as a way of opposing its sale of nuclear weapons technology. An October 1999 PIPA poll that did mention the arguments against economic sanctions nonetheless found 83% favoring limiting trade with China because it "has sold components for nuclear weapons and missiles to other countries." 
However another question that posed the counterargument that economic engagement is the best way "of persuading China to improve its record on human rights and weapons sales" elicited a more modest majority in support for sanctions. In an NBC/WSJ poll taken in March 1997 respondents were given two options and asked to choose the better of two "policy approaches." Fifty-two percent chose "A policy that imposes economic sanctions until China improves its record on human rights and weapon sales," while 39% chose "A policy that pursues close economic and political cooperation in the hopes of persuading China to improve its record on human rights and weapons sales."