The courts struck down local segregation laws because they violated the federal constitution.法庭裁决当地的隔离法非法，因为该隔离法违反宪法。They have proposed an amendment to the federal constitution.他们对联邦宪法提出了一项修正案。These rights are established in the federal constitution.这些权利已经在联邦宪法中得到确认。