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.
Current measures prioritise people by age or health condition.
Mr Biden was speaking exactly a year to the day after the outbreak was classified a global pandemic.
Half a million Americans have since died – more than the death toll from World War One, World War Two, and the Vietnam War combined.
Schools have been closed, businesses shuttered and people kept apart.
Last year many Americans were forced to forgo the elaborate parades, fireworks displays and parties that feature in the national holiday on 4 July, which marks independence from Britain.
In his speech, President Biden said he did not expect large events to be able to go ahead, but he hoped small groups could meet again.
“If we do this together, by 4 July, there is a good chance you, your family and friends can get together in your backyard or in your neighbourhood and have a cookout or a barbecue and celebrate Independence Day,” he said.
“After a long, hard year, that will make this Independence Day truly special – where we not only mark our independence as a nation but we begin to mark our independence from this virus.”
The US has by far the highest death toll in the world from the virus, but death and infection rates have been declining in recent weeks as the vaccine programme picks up.
The country’s health system is complex and individual states are in charge of public health policy. While the federal government is responsible for getting the vaccine distributed to the states, it has largely relied on them to handle the distribution.
But as part of the plans to expand vaccinations, President Biden said the number of places where people could be immunised would be increased, with veterinarians and dentists among those also allowed to vaccinate people.
Mobile units will travel into local communities to provide vaccinations in underserved communities, he said.
Mr Biden previously set a target of 100 million vaccinations by his 100th day in office. But in his address on Thursday, he said this target would be reached on day 60, which is 20 March.
He was speaking shortly after signing a $1.9tn (£1.4tn) economic relief bill, which marks an early legislative victory for his administration. It includes a $1,400 direct payment to most Americans, along with other measures to help people out of poverty and provide additional funding to local and state governments.
Despite the good news on vaccinations, Mr Biden warned that the “fight is far from over”.
He called on people to maintain social distancing measures, hand washing and wear a mask.
“Beating the virus and getting back to normal relies on national unity,” he said.
Mr Biden said last month he hoped that life would return to “normal” by Christmas 2021. Dr Anthony Fauci, the top US infectious diseases expert, described this timetable as “reasonable”.
The president’s caution is at odds with some states such as Texas and Mississippi, which are relaxing restrictions in order to boost their economies.