Inflation is caused when the dollar is devalued.
And how do you devalue the dollar? Print or digitize more dollars.
What did both Obama and Biden do nonstop while they were presidents? They asked the Federal Reserve to print/digitize more money than ever before.
The Federal Reserve is a private bank owned by interests from all over the world and they do no have Americas best interest in mind. That's why they always side with the Democrats.
The Federal Reserve has as it policy of perpetual inflation at 2% per year.
Trump didn't cause to happen. Trump has caused inflation to stall or slow down. It's more obvious in red states that blue because blue states are run be Democrats.