Idaho state Rep. Phil Hart has filed his 2009 tax return, prompting the Idaho Tax Commission to drop a court case against the anti-tax lawmaker. The Spokesman-Review reports that Hart filed his return Dec. 22. Hart is still fighting the commission in a separate case over an order to pay $53,000 in back income taxes and penalties.  The return was filed after the commission went to court last month, saying Hart had ignored repeated notices to file his income tax return by the April 15 deadline. The commission argued that Hart had taxable income in 2009 of at least $16,000, which is his annual salary as a state lawmaker.  Hart, a tax protester, was re-elected to a fourth term in November. He contends the state income tax is unconstitutional.