The dollar is sky-high. Since May 2021, it has risen 19% against Europe’s euro, even reaching 1-to-1 parity in recent weeks. The dollar has appreciated 20% against Britain’s pound. And it is up 28% against Japan’s yen, provoking the Bank of Japan to sell dollars on September 22, essentially the first foreign exchange intervention by a G-7 country since 2011 and the first in the direction of supporting a currency’s value…