The White House is expressing confidence that it's constitutional to require people to have health insurance and believes that President Barack Obama's health care law will be survive all legal challenges in the end.

Obama adviser Stephanie Cutter says the White House strongly disagrees with an appeals court ruling Friday that struck down the insurance requirement at the center of a law.

She says the White House is confident that ruling will not stand.

Cutter notes on the White House blog that four other courts, including a different appeals court, has upheld the law.

Many legal observers expect the U.S. Supreme Court to have the final say on the issue.