Now as to the "timing," glad you asked. Jude Wanniski has done an extensive study on the market in the months before HS was passed. With every advance of HS through a congressional committee vote, the market went DOWN. But the key vote came on Wed. just before "Black Thursday." This made HS a surety.
The more we find out about this idiotic bill, the more the evidence points to it as being the second greatest factor in the Great Depression, behind the antics of the Federal Reserve board. Put THAT in your pipe and smoke it.
Who gives a rat's patoot about any "study" that Wanniski does?
He's not an economist.
His education is Political Science and Journalism: the perfect combo for propaganda, not a serious "study" of economics.