The Border That Texas Shares with Mexico Has Resulted in Which

The border that Texas shares with Mexico has resulted in which of the following consequences?

A) Texas leaders have developed foreign policies toward Mexico independent of the national government.
B) Mexico's proximity to Texas has no impact on the Texas economy or Texas politics.
C) The political choices of Texas leaders have no consequences beyond their own borders.
D) Decisions made by Texas policymakers can have repercussions on relations between the United States as a whole and Mexico.
E) Since the passage of NAFTA, commerce between Mexico and the United States has decreased.