In this video, Motley Fool analyst Brendan Byrnes describes how global currency fluctuations are hurting U.S. automakers in their domestic market. The new Japanese government has enacted policies that devalue the yen relative to the dollar. This allows Japanese automakers, Toyota especially, to make more money off cars made in Japan. This also allows Japanese automakers to price their vehicles more competitively to U.S. cars. The devalued yen and consequent improved price structure for high-quality Japanese cars spells bad news for U.S. automakers.