that five day period to get tested. that is something that is now under consideration. the cdc is very well aware that there has been some pushback about that. >> and then there is the question of how to require testing when tests are so hard to find. and the 500 million promised by the biden administration are no closer to reaching americans' door steps. the contract to buy them still in the works and the website to order them not yet set up. as demand for tests builds, many school districts are requiring students and staff to test negative before returns to class. some opting to go virtual in the meantime. something education secretary cardona wants to avoid. >> the goal ask in person learning suffered enough. >> teachers say not until the current infection wave abates. returning to school will worsen the crisis. the chicago teachers union telling its members to only do remote work until their safety concerns are met. >> senate republicans are also