The problem with the types of temporary entry provisions that are being negotiated under trade agreements like the TPP is that we give up a large amount of regulatory control. These are essentially rights that are not given to workers to move across borders, but to employers to deploy workers internationally. For those workers, there's no path to permanent residency, or no ability to immigrate to the country. Also, there are quite important regulatory differences even between the temporary foreign worker program, where we have had issues of abuse. Again, in the temporary foreign worker program, a company must demonstrate, through a labour market impact assessment, that it looked for and was not able to find qualified workers within Canada or within that local region. Now those types of economic needs tests or certification are prohibited by these agreements. That's the reason the United States' Congress, when it looked at these types of provisions, which had been negotiated in their previous agreements, said this was not trade policy, but immigration policy, and they forbade USTR from making further commitments. That's why the United States has not made any specific commitments on temporary entry in the TPP.
On June 16th, 2016. See this statement in context.