CIUDAD JUAREZ, Mexico/EL PASO, Texas - The Biden administration began implementing a sweeping policy shift at the U.S.-Mexico border on Friday as a COVID-era order that had allowed the swift expulsion of many migrants expired and new asylum restrictions took effect amid confusion and uncertainty. Several last-minute court actions added to questions about how President Joe Biden's reworked border strategy will play out, with advocates filing a legal challenge to the new asylum regulation as it was enacted. Facing concerns that the end of a 3-year-old order - known as Title 42 - could further strain U.S. border facilities, cities and towns, U.S. offi...Keep on reading: Uncertainty clouds U.S. transition at Mexico border as new rules take effect