Magic Johnson says an early checkup saved his life – warning him that he had HIV in time to start taking medication to stay healthy. Alonzo Mourning says a regular physical showed him he had kidney disease. The two former basketball stars are kicking off a full court press by the White House to recruit young adults – specifically, young men – to sign up for health insurance. Look for a lot more of this sort of thing, the White House says. The window of opportunity to sign up for health insurance on the federal and state exchanges closes March 31, and the administration is under extreme political pressure to sign up as many people as possible.