trojan-horse
US /ˌtroʊ.dʒən ˈhɔːrs/
UK /ˌtroʊ.dʒən ˈhɔːrs/
1.
Trojanisches Pferd
a person or thing that joins and deceives a group or organization in order to attack it from the inside:
:
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Conservative Republicans have called the amendment to the bill a trojan horse, designed to stop the bill from passing.