Wow-- you give tough assignments! I read a few of them and they became repetitious so I stopped. From what I read, I gathered that the authors thought that Obama did a lot of damage (that was the repetitious part) but the only policy that I could find them could pointing to as strictly belonging to Obama is the ACA. All of his other policies were either agreed to by the Repubs or actually forced on him by the Repubs who actually shut the government down to bring him around. One of them, the sequester, did demonstrably hurt GDP temporarily, but GDP rebounded quickly and is now at the highest level it has been at since the start of the recession.
Some refer to quantitative easing and Obama has nothing to say about that. Ben Bernanke was appointed by George Bush.
So let's look at the ACA and its effect on the middle class: It was signed into law in 2010. Some of its provisions - like pre-existing conditions- were immediate. The meat of the plan didn't kick in till 1/1/14. Since 1/1/14 there has been record job growth, unemployment has fallen steadily and the stock market has gone up steadily 30%. GDP in the 4 quarter of 2014 was at a post-recession high. Every one of those indicators directly affects the middle class, as they affect everyone else in the US.
So, again, which of his policies do you think hurt the poor and the middle class?
Anyone who does not go overboard- deserves to. Malcolm Forbes, Sr.