This is from Libertarian VP candidate Bill Weld, and when he writes as "we" I am assuming he is speaking for Libertarian Presidential candidate Gary Johnson:
Unlike the Republican or Democratic presidential nominees, we are committed to free trade and vigorously support the pending Trans-Pacific Partnership, which would establish the United States as an economic counterweight to China in Asia.
The only “isolationists” competing for the US presidency today are those who reject the premise of free international trade in goods and services (both major parties) and, worse, those who make a mockery of our obligations under treaties and international law by threatening illegal unilateral sanctions on countries such as Mexico and China (the Republican presumptive nominee).