Democratic Sen. John Kerry will target market distortions -- including Japanese currency-market intervention -- if he is elected president, one of his policy advisers said in a recent interview.

"Because the distortions in the global economic structure are so large, they cannot be ignored," said Clyde Prestowitz, founder and president of the Economic Strategy Institute, a Washington-based think tank.

Prestowitz cited Japan's massive currency-market intervention, aimed at stemming the yen's appreciation against the dollar, as one such distortion.