The Iowa Senate’s Republican leader says lawmakers will try to “dramatically rework” Iowa’s tax laws and may even junk the current income tax system and replace it with a so-called “flat” tax.Senate Republican Leader Stewart Iverson of Dows says the state’s growth is hampered by the current system, and they want to change it to make it a tool for growth. Iverson’s ruling nothing out, even rewriting the entire code, which he says will take support of the governor’s office. Iverson says lawmakers should start out with a blank sheet of paper and consider all ideas. He’s not promising the project would provide a quick jump-start for the economy. Iverson says the real benefits will be seen five, ten and 20 years down the road. House Republican Leader Chuck Gipp of Decorah says Republicans will work with Democrat Governor Tom Vilsack to develop such ideas for “growing” the state’s economy.House Speaker-elect Christopher Rants of Sioux City says the bottom-line goal is to make Iowa grow.Lawmakers say they’ll look at ways to change the tax code to encourage certain industries, like warehouse distribution centers, to come to Iowa.