Republican Vice presidential nominee Mike PenceMichael (Mike) Richard PenceA Day in Photos: The Biden Inauguration Inauguration Sanders takes over internet Harris move into vice president's residence delayed MORE on Thursday said the law is settled on birthright citizenship but that Donald TrumpDonald TrumpIran's leader vows 'revenge,' posting an image resembling Trump Former Sanders spokesperson: Biden 'backing away' from 'populist offerings' Justice Dept. to probe sudden departure of US attorney in Atlanta after Trump criticism MORE's proposed immigration commission would take a closer look at the issue along with other policies.

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"I think the law is very settled on that question for generations of natural-born American citizens," the Indiana governor said Thursday on CNN.

"But I think what Donald Trump has talked about is the establishment of a new commission that will look at all of our immigration laws, including the whole question of ‘anchor babies.'"

The Republican presidential nominee in a speech Wednesday night proposed the creation of an "immigration commission to develop a new set of reforms to our legal immigration system."

The commission would aim to keep immigration levels within historical norms, choose immigrants based on "merit, skill and proficiency" and establish "new immigration controls to boost wages and to ensure that open jobs are offered to American workers first."

"We want people to come into our country, but they have to come in legally and properly vetted, and in a manner that serves the national interest," Trump said.

"We’ve been living under outdated immigration rules from decades ago."