@Cycloptichorn,
There are many, but one biggee is the fear and uncertainty factor, which applies to many industries.
One industry is why invest in some energy sectors when we know the government is meddling in that sector, example cap and trade, which has the potential to literally destroy some sectors of energy to one extent or another, depending on whether legislation passes and what the legislation actually looks like if passed.
Another industry is the auto industry, where the government holds sway over GM, and has great influence over many factors that could derail somebody's investment.
Medical field, why go to medical school if you will be the subject of the state by the time you graduate?
Not just these industries, people in general are very nervous about investments into various things right now, because of government meddling, uncertain tax policy, etc.