As President Donald Trump prepares to meet with Chinese President Xi Jinping this week, the U.S. auto industry and lawmakers on both sides of the aisle are hammering him with a simple message: Please don't offer China any access to the U.S. car market. Trump in January told the Detroit Economic Club that it would be "great" if Chinese automakers wanted to build plants in the U.S. and employ Americans, adding: "I love that. Let China come in, let Japan come in." His comments rang alarm bells in an industry that had systematically lobbied successive administrations to bar Chinese cars from the U.S. market with tough data security rules and high tariffs on electric vehicles.