There is no space for sporting events.
US officials say limited resources and capacity mean that they can only process a fraction of the cases on the waiting list daily.
Migrants say life is difficult here – but the situations they flee to were much worse.
The Benito Juarez Sports Complex is Tijuanas most important migrant home. This is what it looks like and sounds like:
Open sewage and puddles
From the fields in front of the sports complex, it is common to see helicopters and hear air. On the other side of the border, the US authorities are looking for.
From here, too, migrants can see the US border. In the distance, behind the row of blue portable toilets, rises the large metal fence. Nearby, not far from garbage pits, some use showers outdoors. Others clean themselves with water bottles.
Some migrants sneak through the mud trying to avoid the drainage of nearby bathing and bathroom facilities. Children play in the puddles.
Sometimes the smell stinks of sewage in the air.
Sudden cries for help
The screams suddenly came on Wednesday afternoon.
"Careful, watch out!" (19659002) Three people ran into a makeshift infirmary at the shelter, carried a man to an examination room, and pulled a curtain behind them.
In another room, Carlos Betanzos told CNN states inside that protection is increasingly worrying.
"This shelter is not very clean inside. The bathrooms are very bad. They sleep on the floor. The sanitary facilities are not very good," said Betanzos, who works as part of a shelter medical mission of doctors and nurses of the church of the Nazarene.
Betanzos said more than 100 patients would come to their clinic daily. And more than 200 more would go to another clinic within the Mexican government.
Many patients show flu symptoms, he said. Others suffer from lice or stomach diseases – all treatable.
But in such cramped and cramped conditions, physicians are concerned about how quickly more serious diseases can spread.
. "We are worried," he said, "about a very big infection."
Amnesty International said this week that the property does not have enough resources for migrants.
"Mexican federal, state, and city officials separately told Amnesty International that the emergency shelters are not enough food, water, and health services, and these respiratory diseases spread among the people living there," Amnesty said.
It is expected that more migrants will arrive in the coming days.
City Citizen The shelter wants to say that they do their best but need help.
Juan Manuel Gastelum, Mayor of Tijuana, described the situation as a crisis that the city administration can not handle on its own. He said Mexican federal officials would have to step in.
"The federal government should do its job, that is, give us protection, give them food, water, medicine and everything a person needs to be worthy and have one." "This week, Gastelum told CNN," So I need the federal government to take over this situation, and if the federal government is unable to do that, then go to the … United Nations organization that was founded, To help. It's called humanitarian aid. We Need It. "
Manuel Figueroa, who heads the city's social department, said Wednesday that federal support is minimal, while the Mexican navy produces and sells food, financing state and city supplies – as well Gas, electricity and water in the facility.
"Day every day we try to do this without being obliged to do so. This migration situation is the responsibility of the federal government. "
There are now hundreds of children among thousands of migrants seeking shelter in the sports complex, and a playground inside offers some relief for the misery.
Many who are stay in the shelter, sleep outside – some in tents, others lie in sleeping bags or blankets on the dirt.
When the threat was When rain threatened on Wednesday, the migrants tried to cover their tents with black plastic tarpaulins.
In some interiors of the shelter, blankets were provisional dividing walls to ensure privacy. Hanging clotheslines run through the air.
A woman from Honduras named Naira sat on the ground in a sea that It looked like a sea of blankets. Things were not going well, she said. She and her little daughter are doing well, but she realizes that she has to find a way to earn money so they can buy more food.
"There are some," she said, "but very little."
Long lines of food
Members of the Mexican Navy have set up mobile kitchens to prepare and distribute meals.
But the lines for the food are long. Migrants said waiting could take hours.
Cesar Nuñez told CNN on Tuesday night that it had been a day since he had eaten. He said that he does not want to take food out of women's mouths and children who need more.
Nuñez, 30, said he was threatened in Honduras after witnessing a crime and reporting it.
He pointed to a scar on his leg, which is a lasting reminder of violence he wants to leave behind. Gang members attacked him with a machete, he said. Compared with that, he said, the conditions at the shelter are not bad at all.
"We have fled from worse things," he said.
Leyla Santiago of CNN reports from Tijuana. Catherine E. Shoichet of CNN wrote the story in Washington. Rosalina Nieves, Miguel Marquez, Flora Charner and Geneva Sands of CNN contributed to this report.