In December 2017, U.S. President Donald Trump signed into law his country's first major tax reform since the Reagan era. Sometimes new legislation is seismic in its effects, directly altering the playing field on which the citizens of the country operate. At other times, a new law can serve as a useful signpost for greater changes that are already underway. In this case, the tax reform represents a bit of both: It will have important ramifications itself, and it will inform the wider trends that occur over decades. From a geopolitical perspective, the move will have three main effects: It will lead to a repatriation of sizable amounts of cash by U.S. corporations, provide a stimulus for the domestic economy and increase the country's debt.