Mexican officials closed the southbound lanes into Mexico at the Deconcini Port of Entry after protests over rising gas prices erupted on Thursday.
The Port has since reopened.
The gas prices rose as much as 20 percent overnight in some locations.
This all in response to the Mexican government deregulating gas prices in the country.
Officials made the call not to allow vehicles to enter Mexico as the Deconcini Port of Entry for the greater part of the day because of the protests.
On the other side of the border, a group of about 50 people was peacefully protesting the new gas prices.
One protestor is nervous for what's to come.
"If the gas price rises then everything rises. Bread, rice, beans, whatever we eat rises," Miguel Plantillas said.
He says the prices are simply not fair and said it would take him 10 days of work to fill up the tank once.
The director of operations at a gas station on the United States side of the border says he expects more people to come into the US to buy from him.
"By them coming here, it's not only that they're looking for better prices, but it's also a way to protest, saying well 'if you're not going to do this, I don't care if I have to stay in line for an hour. I'm going to go', and that's making a statement," Ivan Munoz said.
At his station, the cheapest gas is around $2.40 a gallon. He says, across the border, it's equivalent to $3 a gallon.
The protestors tell KGUN9 that they plan on making this statement until the decision is reversed and just want their voices to be heard.
— Max Darrow (@MaxDarrowKGUN) January 4, 2017
Border wait times were increased because of the protests.
Click here if you are interested in checking wait times at the border.