Republican policies may boost U.S. economic growth over the short to medium term, but potentially to the detriment of the rest of the world, especially if U.S. trade policy turns decisively protectionist. On Jan. 20, Donald Trump will return to the White House after campaigning on sweeping economic policy change, including broad tariffs on U.S. imports. Trump has also promised to cut taxes, deregulate the U.S. economy and crack down on immigration. The Republican Party's control of both chambers of Congress will enable the president-elect to push through a number of these changes, as will Trump's likely significant use of his executive powers. However, the Republican majorities in the House and the Senate are small, and a Democratic filibuster in the Senate limits legislative change outside budget reconciliation....
