CNN)President Donald Trump,  derided US immigration laws as "weak," "pathetic" and "obsolete."

"Just look at our southern border and look at our weak and obsolete immigration laws. And they are obsolete and they are weak and they are pathetic," Trump said. "And there's no country in the world that has laws like we do and they've got to change and they've got to change now for the safety of our country."

Trump's comment came as he discussed loopholes in US immigration laws that he said can be exploited by terrorists and traffickers -- but it also comes as his administration is keeping a close eye on the arrival of the migrant caravan at the US-Mexican border

Trump also declined to apologize for his campaign proposal to ban all Muslims from the United States, saying "there's nothing to apologize for."

"There's no reason to apologize," Trump said during the joint news conference when asked if he would apologize for his proposed Muslim ban. "Our immigration laws in this country are a total disaster. They're laughed at all over the world."

Trump's refusal to apologize for or rescind his calls during the 2016 campaign for banning all Muslims from entering the United States has been repeatedly cited during court cases concerning the travel ban he put in place last year.

"There's nothing to apologize for. We have to have strong immigration laws to protect our country," Trump said.