horse trading
US /ˈhɔːrs ˌtreɪ.dɪŋ/
UK /ˈhɔːrs ˌtreɪ.dɪŋ/

1.
hard bargaining, especially in politics, where deals are made by exchanging concessions
:
•
The budget negotiations involved a lot of horse trading between the parties.
•
It took a lot of horse trading to get the bill passed.