If lobbying Congress with money can be considered as freedom of speech, it only makes sense that all financial transactions fall into this category.

I wonder if anyone has ever tried to apply this idea to the drug war. While it wouldn't change the legal status of the substance, the methods law enforcement could utilize to obtain evidence, and prosecute could be altered... especially when it comes to asset forfeiture. Or maybe I'm just going off half cocked without putting any actual thought into it... that's most probable.