BY JOE CONASON When Sen. Lindsey Graham told reporters on Tuesday that Mitt Romney’s foreign investment accounts don’t trouble him because “it’s really American to avoid paying taxes,” he must not have realized that he was calling his party’s nominee-to-be a liar. “As long as it was legal, I’m OK with it,” said the South Carolina Republican. “I don’t blame anybody for using the tax code to their advantage. … It’s a game we play. […]