Attorney General Jeff Sessions called California's practice of blocking immigration raids "radical," noting the federal government, not state and local governments, dictates immigration law.

"We wanted a healthy and good relationship with [California], but federal law determines immigration policy. The state of California is not entitled to block that activity," Sessions told Fox News in an interview that aired Wednesday night.

"Somebody needs to stand up and say no, you've gone too far, you cannot do this, this is not reasonable. It's radical, really."

California has taken steps to prevent ICE agents from doing their jobs when it comes to detaining and arresting illegal immigrants. The mayor of San Francisco recently tipped off hundreds of illegal aliens ahead of a planned ICE raid, which resulted in more than 150 arrests. More than 850 other illegals remain in the Oakland area, and ICE believes some of them eluded capture because of the warning.

Sessions said state and local governments must not be allowed to prevent federal law enforcement officers and agents from doing their jobs.

"People have tried to spin this as somehow we're demanding that state and local officials go out and do the work of the federal government," Sessions said. "We just cannot allow them to obstruct or block [federal officers].

"We cannot accept this. Why do we have ICE officers? Are they just going to sit in their offices and do nothing?"

Republicans have slammed Oakland Mayor Libby Schaaf's decision to broadcast news of an impending ICE raid and the state as a whole for not cooperating with the feds when it comes to conducting immigration raids.