Can you detect the logical fallacy here?

It's a question (though it might be a thin veil for the person's opinion). So no argument, and no fallacy.

It just incorrectly assumes that Congress alone is the reason for the high inflation rate (completing ignoring global events which may be influencing this).

If the Congress raise is a minor cause then it would be insignificant cause .

If it's not a cause at all then it's questionable cause .

The statements show a lack of understanding of money and monetary theory. I see this more as an opinion than a logical issue.