Arrest of illegal immigrants to the south of the U.S. is lowest in four years...The walking procession dissolves in the middle.

The number of people caught illegally crossing into the U.S. via land in northern Mexico has fallen to a four-year low in the past, a report showed.

According to Reuters and AP, on the 2nd local time, U.S. Customs and Border Protection tentatively counted about 47,000 immigrants arrested while crossing the U.S.-Mexico border last month.

That was down about 17.5% from about 57,000 in October and the lowest level since July 2020 under Donald Trump's first government, Reuters said.

U.S. media analyzed that arrests of immigrants at the Mexican border have been on the decline since President Joe Biden's so-called "border latch" in June.

On the other hand, some point out that immigrants will continue to march through Mexico to cross the border before Trump's inauguration in January next year.

In fact, 1,500 "caravans," which refer to immigrants moving in large groups, began a walking procession targeting the US-Mexico border the day before in Tapachula, near Guatemala, in southern Mexico, following 2,000 in October, local daily Reforma reported.

Immigrants, mostly from Venezuela, Cuba, Haiti, Colombia, Guatemala and Honduras, took their first steps at night to escape the heat, with caravans largely being dispersed by authorities before they even reached Mexico City, the Mexican government said.

Some of the immigrants have settled in industrial cities in northern Mexico, looking for work.

Migrants are worried that they may abolish the application "CBP One," designed by the Biden administration to handle asylum claims in an orderly manner after Trump's inauguration in January next year.

CBP processes about 1,450 applications every day, and encourages prospective immigrants to book before reaching the border.