The share of people becoming undocumented immigrants in the United States not by illegally crossing a border, but by overstaying their visas was almost 40 percent of estimated new undocumented immigrants in the fiscal year 2023.While an estimated 860,000 new undocumented arrivals were created due to illegal border crossings that year, more than 510,000 people overstayed their visas. This fact has in the past called into question the effectiveness of sealing off borders to curb illegal immigration. During the first Trump term, when the construction of a wall at the U.S.-Mexico border took central stage, the number of overstayers even...