Yes there are inflations in the whole world. But in the US it's mostly caused by the bad polices of the incompetencies of Brandon Administration.
One of the most impotant factors is oil price. Brandon shot down the Keystone Pipeline in his first day on office, and restricted oil drilings and explorations. People say it's only oil price, But so many things are affected by it, such as food, transpotation, air tickets.... they all need oil. In the Trump years, gas price is about $2, now >$4, that's more than 100%!
In 1991 H. Bush started war with Iraq to control the oil price because he knew it would tank the ecomnomy. But this worst moron in the office is doing the most damages to our contry, and the world.