Obviously they had political reasons for making such a claim. However, assuming that the claims are true (and that is a big assumption) what did this actually entail? The timeline associated with the proposal to establish a working group on labor standards is rarely mentioned, for good reason.
Any working group could have to conclude that labour standards are an appropriate item for negotiation. If this happened, then they could be discussed at the next round of the WTO, which would typically begin in six to eight years. If this round led to agreement on labour standards, they could begin to be implemented at its conclusion, which would be approximately 2014. In other words, even if the issue progressed along the path the administration is suggesting, any imposition of labour standards is probably at least 15 years in the future.
And some people wonder why anarchists argue for direct action and international organisation and struggle.