The Supreme Court blocked the Biden administration’s rule, making corporate policies more fraught. : By Andrew Ross Sorkin, Jason Karaian, Sarah Kessler, Stephen Gandel, Michael J. de la Merced, Lauren Hirsch and Ephrat Livni The Supreme Court yesterday blocked the Biden administration from enforcing a vaccine-or-testing mandate for large employers, parts of which were set to go into effect on Monday. In the ruling, the court said that the Labor Department does not have the federal authority to issue the mandate. The justices allowed a narrower mandate for health care workers at facilities receiving federal funds to go ahead.