BOB ABERNETHY, anchor: In Washington, the Senate agreed to an immigration bill that would create a path to citizenship for many of the illegal immigrants in the U.S. But it remains unclear if the bill can be reconciled with the House version passed in December that called for strict punishments for illegal immigrants and those who help them.

If Congress permits some undocumented workers to stay in the U.S., it could allay fears in many families. Last year, 162,000 undocumented workers were deported. Many of those sent back confront a painful choice. If they have children born in the U.S., those children are considered U.S. citizens. They can stay. So, children and their parents wonder if a deportation order comes, should the families spilt up? Lucky Severson reports.

LUCKY SEVERSON: For the past several years, there has been little joy in the Palomar home in Cicero, Illinois. The U.S. Government served notice that because Leandro Palomar was an illegal or undocumented alien, he was going to be deported, even though his two children, Juan Carlos and Stephanie are U.S. citizens because they were born here.

STEPHANIE PALOMAR: There's a lot of families that we know that that has happened to them.

SEVERSON (to Ms. Palomar): That the father or the mother has been sent home?

Ms. PALOMAR: Yeah.

SEVERSON (to Ms. Palomar): Is that something that you are always worried about?

Ms. PALOMAR: Yeah, 'cuz right now, everything is really hard and you never know what could happen.

ROSALBA PINA (Attorney for Leandro Palomar): We had an order that he had to leave the United States within 30 days. And, I was able to file a motion to reconsider with the Board of Immigration Appeals.

SEVERSON: Rosalba Pina is Leandro Palomar's attorney. She specializes in immigration law and felt the chances of overturning Palomar's deportation order were slim to none. She says these are very tense times for immigrant families.

Ms. PINA: Yes, and it's not only the undocumented individuals that are nervous. It's also their loved ones -- because deportation traumatizes the children. It really traumatizes them and makes them become introverted. And, and it's really -- they get stressed. A lot of them start having psychological issues.

SEVERSON: There are two million so called "mixed status" families nationwide in which at least one parent is an illegal immigrant and one or more children are U.S. citizens. A reason for this is because the 14th Amendment, which grants citizenship to all children born in the U.S., except those of foreign diplomats. That's why some, in and out of Congress, want the courts to reinterpret the Amendment to exclude children born to illegal immigrants.

DAN STEIN (President, Federation for American Immigration Reform): Good morning.

SEVERSON: Dan Stein is president of the Federation for American Immigration Reform, also known as FAIR.

Mr. STEIN: The 14th Amendment is an historical artifact that has been misinterpreted and is now deeply prejudicial to this country's ability to control its borders.

SEVERSON: Stein says the 14th Amendment was created after the Civil War to make it easier for slaves to gain citizenship.

Mr. STEIN: Nobody who looks at the 14th Amendment can ever imagine that, in 1866, those people were thinking in terms of a day where millions and millions of people would be moving across national borders.

Ms. PINA: If they were to amend the 14th Amendment to deprive citizenship at birth, I would think that it would change completely everything that we stand for and everything that we represent.

SEVERSON: Randy Capps is a senior research associate with the Urban Institute. He says limiting the 14th Amendment will certainly slow down immigration, but he has some misgivings.

Dr. RANDY CAPPS (Senior Research Associate, Urban Institute): We also have to take in consideration the fact that the children didn't make that decision, the parents did. So, you're holding the children accountable for the sins of the parents.

SEVERSON: Another immigrant family in another Chicago suburb. Only the youngest daughter is a U.S. Citizen, the other three daughters, and their parents are Mexican citizens. A few months ago, they say, they might have talked to us on camera. Today, the father was down in the basement, and the rest of the family afraid to be identified.

(to Unidentified Girl): You think it's unfair?

UNIDENTIFIED GIRL (in silhouette): Yeah.

SEVERSON (to Unidentified Girl): Why?

UNIDENTIFIED GIRL (in silhouette): Because you don't get the opportunities that other children do at this time. They don't have to worry about their families being separated. They don't have to worry about -- like to live with the fear that, one of -- like the policeman could come in, knock on you door -- take you away and separate you.