Bluetown, Texas is across the border from what town in Mexico?
Bluetown, Texas:  It is part of the Brownsville–Harlingen Metropolitan Statistical Area. Brownsville, Texas:  It is located at the southernmost tip of Texas, on the northern bank of the Rio Grande, directly north and across the border from Matamoros, Tamaulipas, Mexico.
Matamoros, Tamaulipas, Mexico