He says that medical liability costs only cause a 1 percent increase. That shows a lack of understanding. Doctors practice defensive medicine because of all the frivolous lawsuits that cost our government $28 billion a year.The total cost of health care is about $1.6 trillion. A little math shows that Bush's reply is really just a quibble. While Kerry says lawsuits raise health costs by 1 percent, Bush, with his self-proclaimed greater understanding, knows that it's really 1.8 percent!