Romney campaign reluctant to answer questions about candidate's immigration stance

The Supreme Court struck down three parts of Arizona's immigration bill Monday. However, the Court upheld the most controversial portion - the SB 1070 provision -  which permits police officers to check a person's immigration status while enforcing other laws.

While the law says police can only check immigration statuses if they have "reasonable suspicion" to believe someone is in the country illegally, critics maintain the law will promote racial profiling.

Mitt Romney has not expressed his position on Arizona's controversial provision while on the campaign trail but has said that he supports giving states greater authority to enforce immigration laws.

Romney campaign senior adviser Carlos Gutierrez tells Soledad O'Brien on CNN's "Starting Point" that "the Governor supports the right of border states and the country at-large to protect its borders, to protect its integrity. It's not an anti-immigration issue."

Gutierrez adds, "This is not about Governor Romney. This is about President Obama's lack of leadership."

Watch more from Soledad's interview with Carlos Gutierrez on CNN's "Starting Point."