The most controversial issues in the US are those that are sometimes classified as “deep integration,” because they go beyond the traditional easing of trade tariffs and quotas. The left’s concerns about labor and the environment were accompanied by fears about excessive benefits for corporations: protection of the intellectual property of pharmaceutical and other companies, and the mechanisms used to settle disputes between investors and states.
在美国，最具争议性的问题那些有时被归类为“深度一体化”的问题，因为它们超过了传统的放松贸易关税和配额的范畴。左派对劳工和环境的关注伴随着对公司过度获益的担忧：对制药公司和其他公司知识产权的保护以及用于解决投资者和国家纠纷的机制。