With Tax Day around the corner, tax policy is front and center this week. So are claims about how changes to the tax code will affect small businesses. The Main Street Alliance released a pair of new fact sheets in its "straight talk" series separating truth from fiction when it comes to small business and taxes. One fact sheet focuses on the Buffett Rule, which would ensure that taxpayers earning over $1 million a year pay a minimum effective tax rate of 30 percent. The other fact sheet focuses on corporate taxes and small business views on corporate tax contributions.