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He said, though, that he is truly concerned about the message Mr. Bieber’s actions are sending — particularly to his young female fans.

Mr. Skrzynski, who on his petition identified himself only as “J.A.” from Detroit, said he used those initials — taken from his middle name and the street where he grew up — in case the petition enraged anyone.

Bieber defenders tried to rally behind their man by starting several petitions pleading with Mr. Obama not to deport the singer. One even asks that Mr. Skrzynski’s petition be removed.

“It’s completely unfair to deport Justin Bieber and revoke his green card. He is a young teen whom is going to make mistakes in life,” B.V., in Dumont, N.J., wrote. “Don’t deport someone who was forced into depression by the media and is bullied everyday of his life for being successful. He hasn’t done anything dramatically horrible. Deportation shouldn’t even be considered for someone whom is growing up and learning about their life.”

That petition earned 1,209 signatures as of Thursday afternoon. All told, the four Bieber-backing petitions had slightly more than 14,000 signatures.

Meanwhile, the two petitions for deportation were nearing 300,000 signatures. At its height in late January, Mr. Skrzynski’s petition was earning 2,000 signatures an hour, though the pace has dropped off considerably.

Mr. Skrzynski said he hoped his petition did raise questions about the immigration system. “I think if it was a poor immigrant — actually someone just poor, middle class — they would probably be on their way out,” he said.

As for Mr. Bieber, he is not in danger of deportation or having his visa revoked based on the charges against him. Under federal law, O-1 visas, which are issued to high-profile academics, performers and others the government deems worthy, are valid as long as the recipient isn’t convicted of a crime of violence.