The Supreme Court rejected opponents of the travel ban to six mostly Muslim countries in its ruling that affirmed the ban, according to Attorney General Jeff Sessions.
"The court rejected this whole narrative of the left . . . It was a major slap down to them," Sessions said Friday on "Fox & Friends."
On Monday, the court ruled 9-0 to uphold the decision, which removed other lower courts' restrictions on the order.
Sessions, in the interview, slammed Hawaii Attorney General Douglas Chin for filing a lawsuit against the ban, saying that its definition of "bona fide" reasons to enter the country is not broad enough. Sessions called Chin an "activist attorney general."
The attorney general also weighed in on the issue of sanctuary cities that refuse to cooperate with the federal government, calling them "frustrating."
"We just simply cannot allow people who've been deported because they've committed a crime to just blithely reenter and commit more crimes in the United States," Sessions said.
"The American people are correct and decent and good. They want a lawful system of immigration that protects the national interests, one they can be proud of," Sessions added during the interview.
"It can be done. It's not impossible," Sessions added.
Experts said more lawsuits should be expected, according to CNN.
"I predict more litigation as people challenge visa denials under these new instructions. Why can a stepsister visit the United States but not a grandmother?" said Stephen Yale-Loehr, a Cornell Law School professor in CNN's report.