"We need to crack down on trading activity that crosses the line to market manipulation. We need regulators that actually enforce the rules instead of overlooking them. The SEC should investigate and punish all market manipulation." - Barack Obama
Alright Barack, let me just assume that your statement is a plausible one. Cracking down and punishing market manipulation would start, not at regulating the market, but setting the market free; it would mean not interfering with the market, but letting the market do it's work.
Market manipulation includes, subsidizing and managing schools, healthcare, and retirement. Market manipulations is the Federal Reserve adjusting interest rates up or down. Market manipulations is mandating price stabilization. If you really want to stop market manipulation, nip it at its source: abolishing central control of money and interest rates, and dismantling government programs. Let the market do it's work, set the market free.