That article came from Agence France-Presse (AFP), which being based in the EU, would use the British English definition of the word "scheme." The use of the term "scheme" in that article wasn't meant to be taken in a way that President Biden did something he shouldn't have or that he did anything wrong.
scheme
1. countable noun:
A scheme is a plan or arrangement involving many people which is made by a government or other organization.
[mainly British]
...schemes to help combat unemployment.
...a private pension scheme.
The company was pouring around $30 million into the scheme.
Synonyms: plan, programme, strategy, system.
2. countable noun:
A scheme is someone's plan for achieving something.
...a quick money-making scheme to get us through the summer.
They would first have to work out some scheme for getting the treasure out.
Tourists can be vulnerable to scams and con schemes of all kinds.