Requiring travelers entering the country by air to test negative for the coronavirus within a day of departure, regardless of vaccination status or nationality, instead of within three days. … Extending through March 18 the requirement that masks be worn on airplanes, trains and public transportation. … Requiring private health insurance companies to cover 100% of the cost of at-home tests for the coronavirus. … Launching a public education campaign to encourage 100 million adults to get boosters, with a special focus on seniors.