senate's mitch mcconnell. >> reporter: shawn mccutchen made big bucks with his electrical engineering company in alabama. he's a millionaire with a problem most persons don't have. he's given hundreds of thousands of dollar does republican candidates since 2010, but for him, it's not enough. >> i gave a lot of money, and i want them to spend more. >> reporter: right now the law says individuals can donate more than $123,200 to political parties during an election cycle. he filed a lawsuit that would allow him to give as much money as he wants as he admits that politics is something he does for fun. >> i consider politics a hobby. >> reporter: but this could change the way elections are paid for by next year's midterms. mitch mcconnell also filed a friend of the court brief. president obama weighed in