What is Horowitz's thesis, and the evidence to support it

These pages that you have to read presents an interesting thesis regarding the very poor historical opinion of president hoover's reaction to the Great Depression. Hoover was a strong advocate of lassiez-faire economic  policies, which were rejected by president roosevelts "new deal."  

you need to read the pages and then answer the question. I don't use big words. It only has to be like a paragraph long. I need this in about An hour or two.