Amid the Trump administration's ongoing crackdown on illegal immigration, and the Supreme Court's decision that grants federal agents the power to stop people in Los Angeles simply for speaking Spanish or appearing Latino, many immigration advocates are warning people to carry their green card or visa at all times.

Since May travelers on domestic flights in the U.S. have needed a Real ID-compliant license to pass through airport security, and thousands in Michigan residents have upgraded to the newer and more secure ID, but the upgraded license doesn't provide proof of citizenship, according to the Michigan Secretary of State Office.

What to know about proof of citizenship.

'Carry your papers' law isn't new

The federal law requiring lawful immigrants and foreign visitors to ca

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