The decision by Burger King to acquire Tim Hortons and move to Canada has renewed the debate over corporate tax reform. Under current law, companies can reduce some of their tax liability on global income (revenue earned outside the U.S.) if they are headquartered abroad. Some policymakers say this move is unpatriotic. Others say it’s commonsense and proof the U.S. needs to close loopholes and lower corporate tax rates. Is this the tipping point? Is it time for comprehensive tax reform?Send no more than 150 words with your name, home address and phone number to email@example.com. Deadline is Wednesday for publication next Monday.