The way Adam Schiff ran the impeachment hearings was not ideal. He continuously silenced Republican members and would not allow many of their requested witnesses to testify. He also had a clear bias against the President.
However, his role was to uncover evidence of wrongdoing by the President, which he did, and Republican members often appeared to want to call irrelevant witnesses and divert the topic into conspiracy theories.
Objectively, it seems that it would have been appropriate for Hunter Biden or Joe Biden to have been called to testify, and Schiff prevented that from happening.
Ultimately, the hearings themselves may not have been completely fair, and some could argue that the impeachment hearings for Bill Clinton and Richard Nixon were not completely fair. However, the law was followed, the process was legitimate, and an impeachment investigation is absolutely the correct, appropriate, and Constitutionally required action when a President appears to have abused his or her power.
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– rob rünt
The Week In Trump 