President Trump will announce plans to re-open the US in his briefing - but many US media outlets have already obtained a copy of the new guidelines.

The “Opening Up America Again" plan includes three 14-day phases that states should consider implementing as they allow schools and businesses to re-open.

The first phase calls for social-distancing measures and for schools and businesses to be shut.

If states see a steady decline in cases, they can move to phase two, in which some businesses can open but in a diminished capacity and groups of up to 50 may gather.

The third phase calls for workers to fully return to business, and for some at-risk people to continue to take precautions. Visits to hospitals and elderly care homes can begin under phase three.

Some large gatherings could begin again as early as 1 May, according to Trump's plan.

In a call with state governors earlier today, Trump walked back his earlier claim that he had "absolute" power to dictate when states should re-open.

Instead, he told governors: "You're going to be running it, we're going to be helping you. We're going to be supplying you as needed, if you need something that you don't have."

"You're going to call your own shots," Trump added on the call, according to a recording obtained by CBS News. "We'll be standing right alongside of you and we're going to get our country open and get it working and our people want to get working."