Washington DC:US President-elect Joe Biden on Sunday said that his country is facing "four historic crises at once", adding that his team is work working hard to tackle the time-bound challenges.
"From COVID-19 and the economy to climate change and racial justice -- our nation is facing four historic crises at once. And come January, there will be no time to waste. That's why my team and I are hard at work preparing to take action on day one," Biden tweeted.
Hours after Biden's tweet, President Trump officially signed the trillion dollar coronavirus relief and government spending bill, The Hill reported.
On Saturday, Biden had accused Donald Trump of "abdicating responsibility" and had pressed the outgoing President to immediately sign the COVID-19 relief bill that was pending.
"It is the day after Christmas, and millions of families don't know if they'll be able to make ends meet because of President Donald Trump's refusal to sign an economic relief bill approved by Congress with an overwhelming and bipartisan majority," Biden said in a statement.
Members of both parties had urged Trump to sign the USD 2.3 trillion packages, The Hill reported. Earlier, the bill was passed with bipartisan support in US Congress.
Read: President-elect Biden pushes Trump to sign COVID-19 relief bill