President Donald Trump unveiled broad new federal guidelines Thursday that lay out conditions for parts of the U.S. to start relaxing some of the strict social distancing measures imposed to combat the spread of the coronavirus pandemic. The 18-page plan for "Opening Up America Again" identifies the circumstances necessary for areas of the country to allow employees to start returning to work – but the decision to lift restrictions will ultimately be made by state governors. Click here to read the new federal guidelines. "We must have a working economy. And we want to get it back. Very, very quickly. And that's what's going to happen," Trump said at a White House press briefing after announcing the new guidance. As many as 29 states "will be able to open relatively soon," Trump said later in the briefing. "We have a lot of states that, through location, through luck and also through a lot of talent ... are in a very good position." But "it could be that sometime in the fall there could be some flare-ups" of the virus, the president added. States, which have imposed their own containment measures to try to slow the spread of the disease, are not legally required to follow the White House's instructions. But the new guidance nevertheless ramps up pressure on governors to loosen their restrictions, even as health experts and business leaders alike warn that widespread testing systems are needed before Americans can safely start returning to their normal lives. "America wants to be open and Americans want to be open," Trump said. "We took the greatest economy in the history of the world, and we closed it in order to win this war. And we're in the process of winning now." Despite the president saying earlier this week that he believed some states may be able to "reopen" their economies before May, the White House guidelines do not offer any specific dates. Rather, the plan lays out three "phases" aimed at guiding parts of the country to move incrementally toward loosening restrictions on businesses and individuals.

Before entering the first phase, the guidelines say that the number of cases, positive tests and reports of flu- or Covid 19-like symptoms in a state or region should be trending downward. There should also be a "robust testing program in place for at-risk healthcare workers, including emerging antibody testing," according to the guidelines. Phase One of the plan says that "all vulnerable individuals" should continue to shelter in place, and it encourages everyone to maintain various social distancing practices when in public. But it also advises employers to "return to work in phases" if possible, while taking precautions such as closing common areas and minimizing nonessential travel. Phase Two, which begins in areas with "no evidence of a rebound" in cases, further loosens the restrictions. Even by the final phase, however, the guidelines still suggest that low-risk individuals "consider minimizing time spent in crowded environments" – an indication that a return to daily life untainted by the coronavirus may not be coming for a long time, if at all. The guidelines also list "Core State Preparedness Responsibilities" that include a section on so-called contact tracing, the process of pinpointing the interactions an infected person has had in order to trace the path of the disease. The plan is a "natural evolution from what we have said before," said Dr. Anthony Fauci, a top health expert on the White House coronavirus task force and the director of the National Institute of Allergy and Infectious Diseases. "By the time we get into the fall, I think we're going to be in pretty good shape," Fauci said.

The Trump administration declined to declare a nationwide lockdown order, opting instead to issue nonbinding social distancing guidelines that were originally set to expire at the end of March. The president even said last month that he hoped to see "packed churches" on Easter Sunday – a comment quickly condemned by health experts. The White House later revised its timeline, extending the guidance through the end of April. But at a coronavirus press briefing Tuesday, Trump said he expects that some of the less-affected states will be able to lift their restrictions before May 1. The availability of coronavirus tests remains a key issue, however. While roughly 120,000 to 140,000 Covid-19 tests are reportedly taken each day in the U.S. – about 3.5 million tests in total so far, Trump said – that rate lags behind other countries on a per-capita basis. Without being able to screen employees and customers for the virus, Americans won't be "confident enough to return to work, eat at restaurants or shop in retail establishments," business executives told the president Wednesday, according to The Wall Street Journal. In phone conferences earlier Thursday, Democratic House and Senate members urged Trump to wait for Covid-19 testing to become more widely available before giving advice on reopening the economy, NBC reported. But Trump pushed back, insisting that the economy must be reopened first, according to NBC. The Infectious Diseases Society of America, meanwhile, recommended Thursday that government leaders should only start changing their social distancing policies "when widespread testing allows accurate surveillance of the coronavirus spread." A "significant expansion" of tests and other medical supplies is still needed before the country can safely be reopened, the organization said.