Middle Eastern scholars who have been studying in the U.S., foreigners planning to visit loved ones living in this country, and others who were outside the United States when the order was issued last week are struggling to find a way in.

Also, some legal U.S. residents and visitors from the affected nations are afraid to leave the U.S. for business or family reasons, fearful they won’t be allowed back.

Meanwhile, attorneys and federal judges are working to clear a path for some of those who were turned away.

One was Sahar Algonaimi, a Syrian-born schoolteacher from Saudi Arabia, who arrived at Chicago’s O’Hare Airport on Jan. 28 on her way to Indiana to care for her elderly, cancer-stricken mother.

Although she had a visa and had visited the U.S. numerous times before, the 58-year-old woman was put on a plane back to Saudi Arabia after authorities persuaded her to give up her visa.

An hour after she left, a judge blocked Trump’s order, an act her family’s attorney said would have allowed her to stay.

“Now, unless we can get the government to give her humanitarian parole, she will have to apply for a new visa,” Kalman Resnick said. “This is just one of many stories from the weekend at O’Hare and all around the country.”

Nazanin Zinouri of South Carolina said she was barred from boarding a flight home over the weekend after traveling to Iran to visit her mother and other family members.

A legal resident of the U.S. since 2010, she has earned master’s and doctorate degrees in this country and works for a technology company. She fears she will lose her job, home, car and pet if she can’t return soon.

“What’s going to happen to my dog? My dog is sick. Is anyone going to adopt him?” she asked. “Am I going to lose my job forever?”

On Jan. 29, Homeland Security Secretary John Kelly said green card holders, or legal permanent U.S. residents, will be allowed to re-enter the country unless there is information indicating the person is a serious threat.

Trump denied his order was to blame for chaos at the nation’s airports over the weekend, instead pointing to computer glitches and protesters.

He took to Twitter to argue that swift action on immigrants was important, saying there are a “lot of bad ‘dudes’ out there.”

The president issued a 90-day ban on travelers from Iraq, Syria, Iran, Sudan, Libya, Somalia and Yemen. He also suspended the admission of all refugees for 120 days and indefinitely barred refugees from Syria.

Even foreign-born U.S. residents on vacation cruises were affected, as Maysam Sodagari, an Iranian-born biotech scientist from San Francisco learned when his ship returned to port in Fort Lauderdale, Florida, after a seven-day sail to the Caribbean.

Sodagari, who has lived in the United States for nine years, said he was pulled aside when he tried to leave the ship with friends.

He was questioned for more than an hour by immigration agents who examined his green card and cellphone, scanned his fingerprints and denied his request to talk to a lawyer.

As his interrogation continued, his friends posted about it on social media and more than 1,000 people reached out to him, including those in the office of House Minority Leader Nancy Pelosi.

Although thousands protested the order in airport demonstrations around the country and civil rights groups and some members of Congress denounced it, Trump supporters say it is needed to safeguard the country.

“We need to know who these people are,” said retired firefighter Charles Lewis of Topeka, Kansas. “I just don’t think this nation is secure. We’re a day late and a dollar short on everything.”

Among those kept out of the country was a California man’s 12-year-old daughter, who was born in Yemen.

Ahmed Ali, a 38-year-old manager of a market in Los Banos, said he had been trying to get a visa for his daughter Eman for five years, and she was finally issued one on Jan. 26.

He had planned to take her to the U.S. on Jan. 28, but she was barred from boarding a flight in the African country of Djibouti.

“It is racist,” he said of the executive order. “We are being targeted for our nationality and religion.”

Ali, his wife and their two older children are U.S. citizens.

Also barred from returning is Khaled Almilaji, a Syrian doctor who has been attending Brown University in Providence, Rhode Island, on a scholarship while he studies ways to rebuild his country’s health system. He said that his pregnant wife remains in the United States.

“It is really sad where the world is going to,” said Almilaji, who risked his life to provide medical care during Syria’s civil war and coordinated a campaign that vaccinated 1.4 million Syrian children.

___

By JOHN ROGERS. AP Press Writers Deepti Hajela in New York; Amanda Lee Myers in Los Angeles; Jennifer McDermott in Providence, Rhode Island; Terry Spencer in West Palm Beach, Florida; John Hanna in Topeka, Kansas; and Martha Waggoner in Raleigh, North Carolina, contributed