WASHINGTON (AP) — Robert F. Kennedy Jr. has struggled answer questions at his Senate confirmation hearing about how he would reform Medicaid or Medicare, the government health care programs used by millions of disabled, poor and older Americans. Kennedy inaccurately claimed Medicaid is fully paid for by the federal government when states and federal taxpayers fund it. Kennedy’s hearing Wednesday to be the nation’s top health official quickly devolved into an argument over the questions he has raised for years about vaccine safety. Kennedy is seeking to lead a $1.7 trillion agency that will oversee vaccine recommendations as well as food inspections and health insurance for half the country in President Donald Trump’s administration. Kennedy denies he’s anti-vaccine.