The time has come to start weighing in on presidential candidate Donald Trump’s statements on economic policy. Today, we examine his comments about U.S. government debt. After saying that he is the “king of debt” and that he “loves debt,” Mr. Trump recently went on suggest that if interest rates were to rise, he would seek to “make a deal” on U.S. Treasury debt. In his words, “I could see long-term renegotiations where we borrow long term at very low rates.” He also called this action: “refinance debt with longer term.”

Mr. Trump appears to assume that his sensibilities as real estate mogul and dealmaker can be directly applied to government debt management policy. They cannot. Treasury securities bear absolutely no resemblance to the debt issued by Trump Entertainment Resorts, which went bankrupt in 1991, 2004, 2009, and 2014...