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

One conflict that occurred over the proposed border wall between Mexico and the United States was the government shutdown that took place in December 2018 and lasted for 35 days. This shutdown was triggered by disagreements between President Donald Trump and Congress over funding for the border wall, with Trump demanding $5.7 billion for its construction. The standoff resulted in hundreds of thousands of federal workers being furloughed or working without pay, causing significant economic hardship and disruptions across the country. The shutdown finally ended when a temporary funding bill was passed without providing money for the wall.