What was one conflict that occurred over the proposed border wall between Mexico and the United States?

landowners in Texas fighting to keep their land from the government
landowners in Texas fighting to keep their land from the government

the potential cost of building a wall at $11 billion
the potential cost of building a wall at $11 billion

the belief that a border wall would be good for the country's security
the belief that a border wall would be good for the country's security

the problems of physically building a wall
the problems of physically building a wall