Besides protecting legitimate savers and investors by exempting stock held five years or more, they could be exempted from a Tobin tax on total stock purchases of under $1 million per year. That would make the tax literally a millionaire's tax -- and a small one at that, at only 1% per trade.
At the G20 summit in Toronto last weekend, a financial transaction tax was discussed and supported by France and Germany but was opposed by the U.S. and Canada, although nothing binding was resolved. However, the states do not have to wait for the federal government or the G20 to act. They could levy a Tobin tax themselves. Objection might be made that the Wall Street speculators would take their revenues and go elsewhere, but big banks and brokerages have branches in every major city in every state. They are hardly likely to pack up their tents and leave lucrative centers of business. Nor can it be argued that we should cater to the pirates who are looting our stock markets because they are paying us a nice bribe, because they aren't even paying a bribe. Financial trades do not currently generate tax revenues.
Two Green Party candidates for governor, Laura Wells in California and Rich Whitney in Illinois, have included a state-imposed Tobin tax in their platforms. Both are also campaigning for state-owned banks in their states, on the model of the Bank of North Dakota. People around the world look to the United States for boldness and innovation, and California and Illinois are two of the hardest hit states in the nation. If those states manage to turn their economies around, they could establish a model for economic sovereignty globally.