Sen. John McCain (R-AZ) on Sunday reacted to the acquittal of former neighborhood watchman George Zimmerman by saying that states needed to reexamine so-called "stand your ground" laws that allow the use of deadly force without a duty to retreat.

The Arizona Republican praised President Barack Obama for his "impressive" remarks on Friday about how his experience as an African-American man related to the Trayvon Martin case.

"There are events like this that highlight the fact that we have a long we to go," McCain explained. "We cannot be complacent in our society when we still have a dramatic disparity between black youth unemployment and non-black youth unemployment."

He added that it was important to support Affirmative Action programs without quotas, but "we've still got a long way to go. And I think the president very appropriately highlighted a lot of that [Friday] as only a president of the United States can."

McCain said he could understand why some would feel that Martin did not receive justice and the "stand your ground law maybe something that needs to be reviewed by the Florida legislature or any other legislature that has passed such legislation."

"And I'm confident of the Arizona legislature will because it is a very controversial legislation."

Watch this video from CNN's State of the Union, broadcast July 21, 2013.