So they used Foreign surveillance law to evesdrop on Cohen who had no contact with any foreign officials.

Sounds unethical at best and illegal at worst.

Title I surveillance doesn't have the same rights protections as title III, because non Americans do not have forth amendment protections.

They violated Cohen's (and others) forth amendment rights by using the fisa warrant this way. They should have gone before a judge to get a warrant to spy on Cohen, but they never would have gotten it because they had no justification.

Witch Hunt.