A Mexican national said he has been barred from entering the United States to bury his 10-year-old son, a U.S. citizen who died Tuesday in a house fire in northeastern Pennsylvania that killed three other people.

Attorneys for Fidelmar "Fidel" Merlos-Lopez are trying to win humanitarian parole so he can attend the funeral, but say U.S. Customs and Border Protection has rebuffed their efforts.

Damien Lopez died in a Shenandoah row house along with his cousin, aunt and 7-month-old half-brother. The funeral is set for Monday, with burial the next day.

"I told the customs officer that all I want is a permit to see my boy for one last time. They treat me as if I am a criminal," Lopez, 34, a bus driver, said in an interview Saturday. "Right now, I need their support, and they are refusing to help me."

Lopez has been waiting at the U.S.-Mexico border near Laredo, Texas, since the fire.

"He's out of his mind. Can you imagine? Your son is dead in a fire and you can't even get across. It's clear they are giving us the runaround," said Elizabeth Surin, his Philadelphia-based immigration lawyer.

A spokeswoman for the border agency did not return a phone message left at her office Saturday.

Lopez was a teenager when he entered the United States illegally in 1995 and wound up in Shenandoah, a blue-collar town with a large Hispanic population. He married a U.S. citizen who gave birth to Damien in 2002. He later divorced Damien's mother and married his current wife, Danielle Lopez, who's also a U.S. citizen.

In 2007, police in nearby Frackville stopped Lopez for running a red light and turned him over to immigration authorities. He agreed to leave the U.S. voluntarily and began the process of applying for legal permanent residence.

Surin, his immigration lawyer, said he was well on his way to getting his green card and rejoining his family in Shenandoah when tragedy struck.

"He's trying to comply, trying to follow the rules of U.S. immigration law, but they are using that against him now. This whole thing is really heart-wrenching," she said.

Humanitarian parole is granted to immigrants who have a compelling emergency that requires temporary entry into the United States. It is used sparingly: The government approves only about 25 percent of the 1,200 applications it gets each year.

Surin said Lopez qualifies. In fact, the Mexican husband of Tiffany Sanchez, the 29-year-old woman who died in the fire, was granted humanitarian parole to attend the funeral, she said.

Surin said border officials told her that Lopez was denied entry because he didn't have a relationship with Damien. She said it's just the opposite: Lopez shared partial custody of Damien and paid his ex-wife child support before leaving the United States. Continued...