10:21 p.m. (MST)
San Luis' businesses rake in plenty of sales from Mexican nationals crossing the border just to shop.
However, the city might see a spike in sales due to a recent decision of the Mexican congress.
Local businesses in San Luis gathered together at City Hall Tuesday night to learn about projects coming up in 2014.
But projects may not be the only changes coming.
The Mexican congress passed a bill that went into effect this month.
That bill raised the sales tax of Mexico's border states by 5%.
So what does this mean for the city of San Luis and other US border states?
Businesses in those areas are going to benefit.
But its not all good news.
More people coming through means more traffic.
The mayor of San Luis is looking to expand the San Luis Port of Entry.
Previously, sales tax of mexico's border states was lower than the rest of the country.
This was to encourage Mexican nationals to keep dollars at home, but now there is less incentive to do just that.
As of now, it is still early to see if the sales numbers have spiked yet or not.