President Trump signed the Hong Kong Human Rights and Democracy Act on Wednesday, reaffirming U.S. support for the city's autonomy after months of pro-democracy protests. Why it matters: The bill, which was passed with overwhelming bipartisan support in both the Senate and the House, serves as a major rebuke of China at a time when Washington and Beijing are engaged in critical trade talks. China has warned that it will take retaliatory measures if the bill becomes law. Between the lines: Even if Trump had declined to sign the bill, it would still likely have the two-thirds support in Congress...