question: What would have to happen to make European sovereign debt assets more like what is found in the U.S. Treasury ?
answer: a collective guarantee of the member states ' solvency
turker_answer: European sovereign debt assets would be more like what is found in the U.S. Treasury because of a a collective guarantee of the member states ' solvency
rule-based: A collective guarantee of the member states ' solvency would have to happen to make European sovereign debt assets more like what is found in the U.S. Treasury .