US-Mexico border faces changes as Title 42 ban ends.

The US has replaced the Title 42 Covid-19 border restrictions with new asylum rules aimed at deterring illegal crossings from Mexico. The new rules presume most migrants are ineligible for asylum if they passed through other nations without first seeking protection elsewhere, or if they failed to use legal pathways for US entry. Immigration advocates have filed a legal challenge against the new regulations, which they say "dramatically curtails the availability of asylum in the United States". The sudden policy shift has put a historic strain on the nation’s beleaguered immigration system, with up to 28,000 migrants being held at US Customs and Border Protection facilities.