ACORN officials in San Diego have fired an employee caught on video providing advice about smuggling young girls into the U.S. for the purposes of prostitution to a couple posing as a pimp and a prostitute.

David Lagstein, the group's head organizer in San Diego, initially said Thursday that he believed Juan Carlos Vera did his best to deal with a challenging situation and would not be disciplined. But three hours later, Lagstein reversed that decision.

• ACORN: A Brief History

He said he reevaluated the videos posted online in which Vera was secretly filmed answering questions about smuggling people into the U.S. through Tijuana. Lagstein said after further discussion with supervisors and state ACORN officials he decided Vera's conduct was "unacceptable."

The video was filmed by conservative activist James O'Keefe, 25, and partner Hannah Giles, 20, who posed as a pimp and prostitute as they did in their previous undercover stings.

O'Keefe asked the worker if Tijuana is the best place to bring the girls to cross over into the U.S.

He replied "yes," because he has a lot of contacts there who can assist in bringing them across the border.

In another part of the video, the worker asked O'Keefe how much he charges for Giles' services.

"Are you a potential client?" O'Keefe asked.

"No, no. I want to know," the man said. "How...what is it?"

Earlier Thursday, the House followed the Senate's lead in denying all federal funding for the scandal-tainted community organizing group.

The House voted 345-75 to strike ACORN funding from a student aid bill with two voting present.

The Defund ACORN Act prohibits any "federal contract grant, cooperative agreement or any other form of agreement (including a memorandum of understanding" from being awarded to or entered into with the group. It also prohibits federal funds "in any other form" from being provided.

The Associated Press contributed to this story.