straightjacket
From Longman Dictionary of Contemporary Englishstraightjacketstraight‧jack‧et /ˈstreɪtˌdʒækɪt/ noun [countable] x-refanother spelling of straitjacketExamples from the Corpusstraightjacket• But in practice, for the great majority of schools, the selection procedure acted as a straightjacket.• It was like being in a straightjacket.• The parliamentary straightjacket which the Labour Party had placed itself in was inimical to violent change.