President Joe Biden looks towards a large “Welcome to Mexico” sign that is hung over the Bridge of the Americas in January during a tour of the El Paso port of entry. Tucson the busiest of the nine southern border sectors for three months running.

Border agents encountered 51,000 migrants arriving between ports of entry in the Tucson sector last month, up from nearly 49,000 in August. That makes Tucson the busiest of the nine southern border sectors for three months running, according to federal statistics released Saturday.

Migration trends are unlikely to change much in Tucson in the near term, Ariel Ruiz Soto, senior policy analyst for the Migration Policy Institute, said on Monday.

The Biden administration has issued policies aimed at deterring Venezuelan arrivals, which have surged nationwide. But Venezuelans aren’t, and haven’t been, a significant portion of those apprehended by agents in the Tucson sector, where migration is still largely driven by Mexican and Central American arrivals, he said.

Border agents in the Tucson sector encountered 227 Venezuelans between ports of entry last month, compared with 18,000 people from Mexico, according to U.S. Customs and Border Protection data.

In the Tucson sector, 58% of arrivals between ports were part of a family unit, as opposed to single adults or unaccompanied children, continuing the trend of rising family migration, Ruiz Soto said.

“Mexican families play a big role in the Tucson sector,” he said.

Tucson will likely continue to see migration increases in the near term, unless the Biden administration implements policies addressing Mexican and Guatemalan migration, or the Mexican government ramps up deportations of migrants at their southern border, as Mexican leaders have indicated they would, Ruiz Soto said.

The situation in Tucson differs from what the Border Patrol is reporting in other parts of the country, according to the Associated Press.

Venezuelans became the largest nationality arrested for illegally crossing the U.S. border, replacing Mexicans for the first time on record, according to figures released Saturday that show September was the second-highest month for arrests of all nationalities.

Venezuelans were arrested 54,833 times by the Border Patrol after entering from Mexico in September, more than double from 22,090 arrests in August and well above the previous monthly high of 33,749 arrests in September 2022.

Arrests of all nationalities entering from Mexico totaled 218,763 in September, up 21% from 181,084 in August and approaching an all-time high of 222,018 in December 2022, according to U.S. Customs and Border Protection. Arrests for the government’s budget year that ended Sept. 30 topped 2 million for the second year in a row, down 7% from an all-time high of more than 2.2 million arrests in the same period a year earlier.

Venezuela plunged into a political, economic and humanitarian crisis over the last decade, pushing more than seven million people to leave. They initially settled in nearby countries in Latin America but began coming to the United States in the last three years, settling in New York, Chicago and other major cities.

The Biden administration recently announced temporary legal status for nearly 500,000 Venezuelans who were already in the United States on July 31, while vowing to deport those who come illegally after that date and fail to get asylum. It recently began deportation flights to Venezuela as part of a diplomatic thaw with the government of Nicolás Maduro, a longtime adversary.

The U.S. “surged resources and personnel” to the border in September, said Troy Miller, acting commissioner of Customs and Border Protection.

“We are continually engaging with domestic and foreign partners to address historic hemispheric migration, including large migrant groups traveling on freight trains, and to enforce consequences including by preparing for direct repatriations to Venezuela,” Miller said.

For decades, Mexicans accounted for the vast majority of illegal crossings but flows shifted over the last decade to Central Americans and, more recently, to people from South America, Africa and Asia.

Mexicans were arrested 39,733 times crossing the border in September, well behind Venezuelans. Guatemalans, Hondurans and Colombians rounded out the top five.

Republicans seized on the latest numbers as its leading presidential candidates have tried to frame the border as a major issue in next year’s elections.

“This fiscal year may have ended, but the historic crisis at our Southwest border sparked by (Homeland Security Secretary Alejandro) Mayorkas’ policies rages on,” said Rep. Mark Green of Tennessee, chair of the House Homeland Security Committee.

The Biden administration proposed about $14 billion for the border in a $106 billion spending package announced Friday and has insisted that any long-term solution requires help from Congress.

The administration has adopted a carrot-and-stick approach of new legal pathways to seek asylum with restrictions on those who don’t adhere to them.

About 43,000 migrants entered the country at land crossings with Mexico in September using a mobile app called CBP One, bringing the total to nearly 278,000 since the online appointment system began in January. Also, more than 265,000 people from Cuba, Haiti, Nicaragua and Venezuela entered through September at airports after applying online with financial sponsors.

Including those legal pathways, the number of crossings hit a new all-time monthly high of 269,735 in September and a new budget-year high of nearly 2.5 million.


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Contact reporter Emily Bregel at ebregel@tucson.com. On X, formerly Twitter: @EmilyBregel