A CNBC poll that asks the question, "Should the government bar big institutions from investing in the commodities market?" shows that 60 percent of the respondents say, "Yes," while 34 percent say, "No." (4.5 percent say, "Not sure yet.")
While there is a majority in favor of the ban, it is not overwhelming. This suggests to me that there is only grudging belief that speculation has something to do with the problem.