Question

Mexico and the United States have strained border relations mainly due to the following factor:

Answer 1

I think its D im im 76% sure

Answer 2

Answer:

D. The US has intensified security measures to monitor and control legal and illegal transport of people and goods

Explanation:

Mexico and the United States share a 3154 km long border, this along with the fact that form that border is from where the southamericans and central americans immigrate illegaly to the states and the legal and illegal transport of goods on the border have strained the border realtions between the two countries.