Chinese President Xi Jinping in an address to business leaders in Seattle signaled he is willing to work with the U.S. on the issue of cybertheft, a topic that President Obama and other senior administration officials have said will be a key part of the agenda at this week's state visit. But Xi signaled he has little interest in taking up U.S. complaints that Chinese technology laws and regulations discriminate against U.S. firms by stating that China treats foreign firms...