On the 19th, a French official disclosed that a French scientific researcher who went to the United States for a meeting was found by U.S. border inspectors to have chat messages criticizing the policies of the Trump administration on his mobile phone when he entered the country. His device was subsequently confiscated and he was prohibited from entering the country. The person was deported the next day. On the 20th, the French popular science website "Future Science" published an article saying, "In the 21st century, something like this happened. This Frenchman was deported from the United States like a criminal."

U.S. Vice President Vance recently made remarks that further extended the outside world's concerns about the Trump administration's immigration policies to the identity stability of legal permanent residents, triggering widespread anxiety among green card holders about their rights to long-term residence in the United States.

Last week, while Vance was there, CNN reported on the situation. Vance said at the time, "Green card holders do not have the right to stay in the United States indefinitely, right? U.S. citizens, green card holders, and student visa holders have completely different rights. Same thing. So my attitude is, fundamentally, it has nothing to do with freedom of speech. As far as I'm concerned, it's really closely related to national security. If the secretary of state and the president decide, 'This person should not continue to be in the United States and has no legal right to be here,' then it's that simple."

Tattoo artist Marina Sinden lives in Washington state. She is planning to visit relatives in Canada during Easter. She is a green card holder married to a U.S. citizen. However, she is worried about her return. She said that if she is refused entry when she returns to the United States, she will lose everything here.

Recently, tensions at the US-Canada border have escalated, and the Trump administration has tightened entry requirements for Canadians. In the past, Canadians could enter the United States directly without any formalities. However, after Trump took office, he made regulations that Canadians entering the United States by land must register if they stay for more than 30 days.

In response to this situation, Canada's Global Affairs Department issued a warning in mid-March, which required Canadians to "be familiar with all U.S. entry requirements." The department also stated that "every country has the power to formulate entry regulations, and whether travelers enter a country or not, the risks involved in the process are entirely borne by themselves."