DALLAS (June 26, 2012)--The federal government may have to implement some provisions of the president’s health care law in Texas that state leaders have been slow to embrace if the U.S. Supreme Court upholds the legislation.

Gov. Rick Perry and other leaders have blasted the law, which the Supreme Court is supposed to rule on by Thursday and Texas has joined other states in challenging the law in court.

The latest Census figures show that about 25 percent of Texans are uninsured.

A spokeswoman for Texas Health and Human Services, responsible for the law's Medicaid expansion, says officials are prepared to implement changes if the act is upheld.

Stephanie Goodman said the state already has met deadlines for some requirements.

Texas has not yet established an insurance exchange.