The U.S. -Mexico border was plunged into chaos over the weekend after hundreds of migrants rushed the fence near Tijuana, some hurling projectiles at agents as they ran.
The data poses a challenge to the current anger over the Border Patrol's use of tear gas on Sunday to prevent a mob from busting through sections of old border fence in California.
Groups of Central American migrants have been converging on the Mexican border city for days in their quest to gain entry to the United States. News reports say that hundreds of them left the stadium on November 25 and marched over to the border, some carrying posters and signs, to make their case and be allowed into the United States.
Many are fleeing gang violence and seeking asylum in the United States.
The migrants, mostly from Honduras, are part of a "caravan" loudly condemned by President Donald Trump.
A group of migrants climbed a fence as they tried to reach the US-Mexico border
"Mexico should move the flag waving Migrants, many of whom are stone cold criminals, back to their countries", Trump wrote on Twitter. Migrants in a caravan of Central Americans scrambled to reach the USA border, catching rides on buses and trucks for hundreds of miles in the last leg of their journey Wednesday as the first sizable groups began arriving in the border city of Tijuana.
President Trump threatened to shut the 2,000-mile (3,200km) US-Mexico border down once more this morning. Democrats and even some lawmakers in Trump's own party have resisted his calls to fund his proposed border wall.
Later, Trump told reporters at an event in MS that he would close the border if migrants "charge" the barrier.
The response was necessary to "disperse them from the area", she said.
The San Ysidro Port of Entry, located between Tijuana and San Diego, had to be closed for hours Sunday after the incident. Or that Mexico's Interior Ministry said around 500 migrants tried to "violently" enter the US, the Associated Press reported, adding that it would immediately deport those people and would reinforce security.
"If they're launching tear gas, it's better to head somewhere else", he said.
Like other federal law enforcement officers, Border Patrol agents are allowed to use force if they think they are under attack.
Tijuana Mayor Juan Manuel Gastelum said the throngs of migrants who have descended on his city is tantamount to a humanitarian crisis, and he declared an emergency.
United States authorities said on Monday that 42 people had been arrested for illegal crossing on the USA side of the border.
Chief Patrol Agent Rodney Scott told CNN "numerous" people had made it across the border on Sunday, adding that most of those who were detained were men.
CBP Commissioner Kevin McAleenan said in a statement four agents were hit with rocks on Sunday, but they did not suffer serious injuries. "A minority of this caravan - a small minority - is actually family members, women and children", Homan told Fox News' "America's Newsroom." .
One of the migrants at a temporary shelter in Tijuana, Mexico. Some U.S. officials have put the number higher. And they're not following the legal process. A young woman fell to the ground unconscious, and two babies cried, tears streaming from the gas. In total, about 5,600 active-duty troops are on the border with Mexico. Sarmiento said she had been near the bottom of the Tijuana River when USA agents fired tear gas.