Trump wants to build a wall across the America and Mexico’s border. Trump’s wall is a series of fences along the border of Mexico and America. It could costs up to $21.6 billion.This wall will take more than three years to build. There will be three phases of construction. Trump is constantly promising that Mexico will reimburse U.S tax payers for the costs of construction. However this suggestion has been shot down by Mexican officials. “We do not need laws” Donald trump said this soon after signing the two executive orders.