SAN DIEGO (REUTERS) - On Sundays, the border fence between Mexico and the United States hosts reunions along the Tijuana-San Diego border

It is the only place along the entire border where such meetings are allowed. On one side, many who have been deported from the US, on the other those who fear deportation from the US.

It can offer a chance to introduce new family members, or for Yolanda Hernandez, to see someone she hasn't seen in a long time.

"It's beautiful. The best thing that could happen to us, to see my sister after not seeing her for many years. Now, to see her. A lot of emotions come up," she said.

With some 11 million undocumented immigrants in the United States, President Barack Obama has sought to introduce reforms to ease the threat of deportation and make it possible for them to visit family in their home countries.

But such efforts have deadlocked, and the number of deportations has risen.

Activist Roberto Vivar, founder of "Dreamers Moms," says hate and division have tarnished the United States.

"We ask ourselves: 'What has happened to the US?' We are going back to the 1960s, where we saw all this hatred, racism, and now this is 2016 and we haven't advanced at all," he said

So, for some families all they have is this wall and the hope of a different kind of future.