Los Angeles (AFP) – A health rule imposed at the start of the Covid-19 pandemic that has blocked most asylum seekers at the US border with Mexico must stay in place, a judge ruled Friday. Title 42, the colloquial name for an order that can effectively prevent anyone without a visa from entering the United States, even to claim asylum, was due to expire on Monday. President Joe Biden’s administration said the rule was no longer needed, more than two years after it was imposed by then-president Donald Trump. But Republican governors of more than 20 states went to court to demand that it remain i…