0746 GMT - Copper moves slightly lower in morning European trade after the U.S. dollar strengthened and hit investor appetite, ANZ analysts write. Additionally, there are signs that a supply squeeze might be easing given the premium for spot copper over three-month futures has fallen, they say. However, globally inventories continue to be drawn down, they caution. The market is on edge as it awaits an announcement from the White House on plans for tariffs on imported refined copper, they add. This worry has triggered a flow of copper into the country in recent months. Three-month LME futures fall 0.3% to $14,219 a metric ton.