-The Great Depression was caused by drumroll THE FEDERAL RESERVE Even your boy Ben Bernake says that.
The Great Depression of 1929 - Causes of the Great Depression of 1929 - Unemployment During the Great Depression
-Health care was cheaper until drumroll MEDICARE but was increasing even before that because of drumroll SOCIAL SECURITY. Healthcare was cheap until SS. The medical community knew that seniors were being paid SS so they, in turn, did a money grab on it. This resulted in Medicare, which was opposed by the American Medical Association as "untenable" and giving too much control to the Federal gov't. But we still got it. Just like the ACA. All of the aforementioned programs were not popular with the country for the very reason they are bankrupting us now. Because they all knew that politicians wouldn't be able to leave well enough alone and let the programs stay as is. That's what happened with SS and Medicare/aid and look where we're at. It will happen with the ACA too.
-Now, the Dustbowl. I will concede that it is a special circumstance that required special care. The Federal gov't should have a play in that. They should be involved. I don't think they should establish permanent committees on it though. I believe the way to go would have been to require states to establish a committee or council on soil conservation, etc and leave it to the states to manage. In this case, the states had shown they mismanaged their resources and hurt the country by doing so. That doesn't mean the Federal gov't gets to come in and rule with a heavy hand indefinitely though. Also, this doesn't require a politician to be an expert in agriculture. It requires him to be savvy enough to know that he is out of his league when speaking of it and source the proper experts in the field to come in and advise the Congress on it.
I think that's our issue. Many of our politicians act as though they are experts in everything. No one can know that much. I can see someone knowing, say, economics well. I can see someone being educated in military affairs. But all of them act as though they know all of these subjects equally and are the "go to guy" on them. I believe a lot of our politicians need a dose of humility.