This new testing requirement isn’t going to control spread of the virus, which is already running rampant throughout most of the country. It isn’t going to stop entry of new variants of the virus, which are already here (and which we’re doing little tracking of in any case).
We need fewer barriers to low-cost at-home testing. We need greater tracking of new variants of the virus. We need more rapid approval and deployment both for Covid-19 treatments and vaccines. A travel ban that applies internationally, but that does nothing to limit spread via travel within the United States, at what’s likely the tail end of the pandemic is purely cosmetic but may have long-lasting consequences.