joint resolution
US /ˌdʒɔɪnt rezəˈluːʃən/
UK /ˌdʒɔɪnt rezəˈluːʃən/

1.
a legislative measure that requires the approval of both chambers of Congress and the president's signature to become law, similar to a bill, but typically used for more limited or temporary matters
:
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The Senate passed a joint resolution to authorize military action.
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A joint resolution is often used for proposing constitutional amendments.