President Joe Biden has said he is hopeful that America can "mark independence" from Covid-19 on 4 July if people get vaccinated.
In his first primetime address as president, Mr Biden said he would order states to make all adults eligible for vaccinations by 1 May.
"If we do this together, by 4 July, there is a good chance you, your family and friends can get together in your backyard and celebrate Independence Day," Mr Biden said.
He added that the country would be able to not only celebrate Independence Day but also "independence from this virus".