Answer:
Renegotiate borders after the Rio Grande changes course
Step-by-step explanation:
International Boundary Commission
This is simply known as an international body set up by the United States and Mexico. It was founded in 1889. It main focus is to apply the rules for determining the location of their international boundary when meandering rivers transferred tracts of land from one bank to the other, as said to be established under the Convention of November 12, 1884. Boundary is commonly referred as a containers of Sovereignity.
The Rio Grande is said to be a floating boundary as the river course goes is the shift is by something called ecritian.
1889 Boundary Convention was set up the boundary commission to deal with all disputes arising from the river.