They found 100+ emails on her personal server that were classified, 20+ of which were classified as Top Secret. The Inspector General's Report is public, as is the DOJ report declining prosecution.
The emails, albeit classified, are not in the same stratosphere of the much more sensitive boxes of documents that Trump took with him.
Prior to leaving office, Trump was told that he could not take them home to Florida. He did anyway ..... because rules and laws are nothing that he has every paid attention to.
Trump has continued to retain these highly classified documents. He has NOT cooperated.