That's not true. US citizens can have dual nationality. http://travel.state.gov/content/travel/english/legal-conside...

>Their treatment of women, in particular, would strike an American as archaic and quaintly Mad Men at best, and at worst barbaric and abusive.

Citation needed. I've been working in Japan for 8 years, and I haven't experienced this kind of treatment from Japanese men at all.

Not sure about barbaric and abusive, but in gender equality terms, Japan was most recently (2012) ranked 101 out of 135 countries by the World Economic Forum [1], compared with 18 and 22 for the UK and US respectively. The index purports to:

benchmarks national gender gaps on economic, political, education- and health-based criteria

[1] PDF http://www3.weforum.org/docs/WEF_GenderGap_Report_2012.pdf

This reminds me of the Japanese business word "Ho-Ren-Sou", which stands for houkoku (report), renraku (contact, communicate), and soudan (consult, get feedback).

It also means "spinach", so it is easy to remember ;)