Joaquín "El Chapo" Guzmán has asked a federal judge to reinstate his phone call and visiting privileges at the supermax prison in Colorado.

The machine-printed banners were purportedly signed by a faction of the Sinaloa cartel led by the sons of jailed Mexican drug lord Joaquin "El Chapo" Guzman.

The Mexican drug lord's son, Ovidio Guzman, has arrived in the U.S. to face drug trafficking charges.

The wife of Joaquin "El Chapo" Guzman was released from her California halfway house on Wednesday, a prison official confirmed to ABC News.

The Justice Department on Friday announced a massive crackdown targeting a global drug trafficking network with members in China and Mexico including El Chapo's sons.

Ovidio Guzman was taken into custody during a pre-dawn military operation, sparking gunfights and roadblocks across the city where the Sinaloa Cartel is headquartered in Mexico.

Ovidio Guzmán, a top leader of the Sinaloa Cartel and the son of Joaquin "El Chapo" Guzmán, the notorious drug lord, has been arrested by authorities in Mexico.

El Chapo conviction upheld.

El Chapo's wife sentenced to three years in prison.

Emma Coronel, 31, was arrested at Dulles International Airport on Monday and is accused of participating in a conspiracy to distribute cocaine, meth, heroin and marijuana for import into the U.S.

Prosecutors are accusing her of participating in a conspiracy to distribute drugs for import in the U.S.

Mexico's president praised the military's decision to release Ovidio Guzmán López, saying, "It is no longer to face violence with violence, evil with evil."

Mexican authorities were surrounded -- and residents were attacked -- as police tried to arrest "El Chapo's" fugitive son in a Sinaloa cartel city Thursday.

ABC News goes one-on-one with Raymond Donovan, special agent in charge, New York Field Division Drug Enforcement Administration.

Mexican drug lord, Joaquí­n "El Chapo" Guzmán was given a life sentence in U.S. prison.

Guzman, 62, was convicted on charges that mandate life in prison.

Joaquin "El Chapo" Guzman was sentenced to life in prison, a federal judge in Brooklyn decided Wednesday.

Joaquin "El Chapo" Guzman is set to be sentenced to life in prison on Wednesday, after he was convicted of running a murderous Mexico-based drug cartel.

Joaquin Guzman is currently in a New York federal correctional facility on charges of drug trafficking and conspiracy to murder.

Infamous drug lord "El Chapo" faces life in prison after being found guilty on 10 separate charges in a Brooklyn federal court.

Joaquin "El Chapo" Guzman was found guilty on all 10 counts, including drug trafficking and engaging in a continuing criminal enterprise.

The notorious drug lord Joaquin "El Chapo" Guzman faces sentencing in June and will be sent to a maximum-security prison in the U.S.

Notorious Mexican drug kingpin Joaquin "El Chapo" Guzman has been convicted of trafficking cocaine, heroin, methamphetamine and marijuana and expected to be sentenced to life in prison.

Joaquin "El Chapo" Guzman is a notorious leader of the Sinaloa cartel.

The drug lord is expected to be sentenced to life without the possibility of parole.

Joaquin "El Chapo" Guzman is a notorious leader of the Sinaloa Cartel.

The defense in the "El Chapo" trial only called one witness and rested after only 30 minutes during the 10-week trial of alleged drug lord.

Joaquin "El Chapo" Guzman was extradited to the U.S. in 2017.

Details emerge from the alleged drug lord's trial, revealing murders, kidnapping, torture and bribery surrounding the 10 counts the jury is set to review as the case comes to a close.

Jury set to deliberate in trial of alleged Mexican drug trafficker

Joaquin "El Chapo" Guzman was extradited to the U.S. in 2017.

The dismissed juror in the trial of Joaquin "El Chapo" Guzman delivered a handwritten note to the judge explaining the trial was causing her anxiety and other medical issues.

The former Mexican drug lord is facing charges of murder, torture and drug trafficking.

Federal prosecutors said Joaquin “El Chapo” Guzman can be linked to 36 murders.

Joaquin "El Chapo" Guzman is accused of being involved in dozens of murders.

If convicted, Joaquin "El Chapo" Guzman could spend the rest of his life in prison.

Federal prosecutors said Joaquin "El Chapo" Guzman can be linked to 36 murders.

The ruling denied a request filed on Wednesday by attorneys for the world's most notorious alleged drug lord for permission from the court to hug his wife.

The defendant's lawyers asked a judge to allow Guzman to hug his wife in court.

The alleged drug lord is seeking a 'brief, momentary greeting' from his wife.

Tracing Joaquin Guzman's path to the top of the global drug trade.

Jury selection gets underway in the trial against accused drug kingpin Joaquin "El Chapo" Guzman. ABC News' Kendis Gibson reports.

His trial is set for September.

The Mexican drug lord is scheduled to go on trial later this year in the U.S.

The drug kingpin's lawyers said restrictive jail conditions are causing harm.

Joaquin Guzman was extradited to the United States in January.

The Mexican drug lord was extradited to the U.S. last month.