What is the reason for the high US inflation rate in 2022?

As reported in the news, for example the Guardian, US current inflation rate is above 8% in annual rate, close to a 40-year high. Can someone please help me understand the root cause?

I started hearing people around me blaming Biden for this, and saying Trump could do better than this. However, since many countries are also experiencing high inflation rate, I'm not super convinced that US high inflation is because of that.