How can american citizens show their disapproval with the actions of federal officeholders and force them to make changes.?

Explanation:

In this cases, they most via is protests, this is the famous way to show disapproval, because in other methods, governments tend to not hear, like formal complaints for examples.

Another option, in case that protests don't get them anywhere, is wait the next election and vote, the suffrage is the most precise way to show disapproval.

the answer is camped