The Science Committee argues that it's subpoena of New York's climate change investigation material is valid

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The letter contains an exhaustive explanation about why they believe their subpoena is constitutionally valid and does not violate First or Tenth Amendment rights.

- Click here for the letter.

The letter mentions Wilkinson v Unites States, a Supreme Court case which sets out the three prong test that determines whether a congressional subpoena is legal.

- Click here for the case.

For more there's this law review article:

- Congressional Investigations and the SupremeCourt