Berenson, who served a 15-year sentence in Peru before being paroled last year, made it home in time for the holidays.
After three days of confusion in which Peruvian authorities prevented her from boarding a flight despite a court order allowing her to leave, Lori Berenson arrived in the United States Tuesday morning for her first visit home since being convicted of aiding Peruvian guerrillas in 1995.
Berenson's plane touched down at Newark Liberty International Airport in New Jersey around 7:35 a.m. The 42-year-old was greeted by two customs officers who escorted her to somewhere other than the usual passport checking area.
Berenson's mother, Rhoda Berenson, was waiting expectantly for her daughter in the international arrivals area of the airport.
"We are looking forward to the first holiday at home in a long, long time and many relatives who haven't met Salvador are excited to see him," she said, speaking of her 2-year-old grandson. "This is not a political time; this is a time for family, friends and holidays."
She said said they were heading to New York for the holidays.
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Lori Berenson boarded a Continental Airlines flight at Lima's main airport late Monday under intense media scrutiny, as many in Peru wonder whether she will return to the country by the court-ordered deadline of Jan. 11.
Wearing a black turtleneck, black jeans and designer eyeglasses, Berenson told an Associated Press reporter while waiting for her flight that she intended to return to Peru. Berenson was accompanied by a U.S. Embassy employee.
"I just hope we don't get caught in a snow storm," she said, joking that such an occurrence in the U.S. would delay her return.
Berenson's departure capped three days of confusion after Peruvian authorities had prevented her from boarding a flight to New York on Friday despite a court approval allowing her to leave.
The authorities said Berenson, who had served 15 years on an accomplice to terrorism conviction before her parole last year, lacked an additional document.
Peruvian migration officials finally gave Berenson another document Monday clearing her to leave the country with her son to spend the holidays with her family in New York City.
Her father, Mark Berenson, said Monday that he was anxious to see her return.
"I'm just glad that they finally resolved the thing," he told the AP by phone from New York.
Lori Berenson admitted helping the Tupac Amaru rebel group rent a safe house where authorities seized a cache of weapons after a shootout with the rebels. She insists she didn't know guns were stored there and says she never joined the group.
In 1996, a military court of hooded judges convicted Berenson of treason and sentenced her to life in prison. After U.S. pressure, she was retried by a civilian court.
Mark Berenson said he went to sleep Friday night expecting to pick up his daughter and 2-year-old grandson, Salvador Apari, the following morning.
Instead, he was awakened by news that she had been blocked from returning and spent the rest of the night angry and unable to sleep.
It's not clear whether Berenson's delayed exit amounted to government harassment or whether she simply got caught between competing bureaucracies.
The court ruled that Berenson was not a flight risk. Her father told the AP that his daughter has every intention of returning to Peru.
By law, she must remain in Peru until her full sentence lapses unless President Ollanta Humala decides to commute it.
State anti-terrorism attorney Julio Galindo said he filed an appeal on Friday seeking to nullify the court ruling that approved Berenson's New York trip. He opposed Lori Berenson's parole from the start, and succeeded last year in having her returned to prison on a technicality for 2 1/2 months until a court ordered her freed in November.
Peru remains deeply scarred from its 1980-2000 conflict, which claimed some 70,000 lives.
Its gaping inequalities drew the young Berenson to Peru from El Salvador, where she had worked for the country's top rebel commander during negotiations that led to a 1992 peace accord.
Tupac Amaru was a lesser player in Peru's conflict and Berenson sought it out, she told the AP in an interview last year, because it was similar to other revolutionary movements in Latin America.
The group never set off car bombs or engaged in the merciless slaughter of thousands as Shining Path rebels did, but it did engage in kidnappings and selective killings.
In the 1980s, it was known for hijacking grocery trucks and distributing food to the poor.
The group most famously raided the Japanese embassy in Peru in 1996 during a party and held 72 hostages for more than four months. A government raid killed all the rebel hostage takers.
Berenson was arrested leaving Peru's Congress and accused of helping plan its armed takeover, which never happened.
She was initially unrepentant, but harsh prison life softened her. She was praised as a model prisoner in the report that supported her parole.
Some Peruvians still consider her a terrorist. She had been insulted in the street, and news media have repeatedly hounded and mobbed her.
Associated Press writer Martin Villena contributed to this report.