The dollar's weakness stems from many factors. The China news is one of them, ... It is great electioneering rhetoric, but the import quotas will not stem the tide of Chinese textile imports... nor any other imports from China.
People are coming to the realization there is a very high likelihood that the BOJ next week are going to stop quantitative easing or begin to unwind it, and there is a lot of market focus on Japan CPI data later this week.
Initially it provided a basis for people to take profits on their dollar shorts because what the Fed was saying was they may not know with certainty that they will pause (in raising rates) and ....therefore there's no reason to get your groove on and sell dollars.