Unique and incredible scenes took place in parallel when Wednesday 6 January entered the history books.
At the same time as the US Congress was stormed by Trump supporters, the news came that the Democrats had won the Senate and thus gained control of both chambers.
Thus, Joe Biden can push through his green revolution, a necessity to curb global warming but a huge challenge in a polarized United States.
Joe Biden's promised government green investment of an incredible two trillion dollars - 2,000 billion kronor - will give the US a new and greener infrastructure with, among other things, investments in the world's fastest train network, strong subsidies to those who buy electric cars and replace the US energy sector with renewable energy. 2035
Just as President Frank D Roosevelt launched "A New Deal" in the 1930s, Democrats envision powerful government incentives in a "Green New Deal" to help, among other things, small business owners who have been hit hard by the pandemic.
Will not go painlessly
But it will not go painlessly.
The Senate is not always known for voting completely along the party line and some decisions require a qualified majority, then Kamala Harris' casting vote is not enough.
In addition, Joe Biden will face opposition from both the powerful oil industry and unions who see that 100,000s of jobs will be lost in the greatest structural change ever.
Among Donald Trump's furious supporters, there are many who lost their jobs when factories moved abroad.
Joe Biden knows this.
He sees his green plan as an opportunity to accelerate the domestic manufacturing industry.
"When I think of climate change, it's the word 'job' that comes to mind," he said.
But in several states - which are dependent on oil, coal power and extraction of natural gas via so-called fracking - there is great uncertainty as to where the new jobs will come from.
The challenges are enormous
Anyone who has been to the United States, the homeland of consumption and motoring, realizes that the challenges are enormous.
The United States has the world's largest historical carbon debt, 397 gigatons, calculated from 1750 onwards (China is second at 214 gigatons).
In order to zero their carbon dioxide emissions, fossil energy companies will suffer from carbon dioxide taxes in order to reduce profitability, the same development that has already taken place within the EU.
The coal industry is already on its knees and has declined by 44 percent during President Trump's term.
But the new president of the United States wants more than that, he wants to regain leadership in the world towards sustainable development.
His green transition plan is more comprehensive than the EU's and thus becomes a powerful signal to other countries.
Starts uphill
But the United States is starting uphill.
When the United States re-enters the global arena, much has changed.
The United States is ranked as the worst in the world on climate policy, after Saudi Arabia, after Trump's time in the White House.
A global race to gain green market share is now underway.
China is investing heavily in becoming a leader in the electric car market.
The EU is planning for climate tariffs to punish the import of goods manufactured without environmental considerations.
Now the United States needs to find its place in a rapidly changing world where more and more banks and financial institutions are refusing to finance fossil energy projects.
Will be forced to higher ambitions
The United States will once again join the Paris Agreement and will thus be forced into a series of heightened ambitions.
The Paris Agreement is based on a review and tightening every five years.
This year, all countries will tighten their national commitments, as will the United States.
Joe Biden has promised that the United States will be carbon neutral by 2050, just like the EU and Japan.
The Paris Agreement also includes a decision that rich countries will lead the fight against climate change and provide poor countries with technology and resources to deal with the climate crisis.
From 2020, $ 100 billion a year will be transferred from rich countries to developing countries.
The fact that the United States, as the world's richest country, is now included again is of the utmost importance for the transfer of resources to become a reality.
A handful of votes in the state of Georgia are now paving the way for a green revolution in the United States.
More and more Americans say they notice climate change in their daily lives.
But it remains to be seen how powerful Joe Biden's opponents will be.