carte-blanche

US /ˌkɑːrt ˈblɑːnʃ/
UK /ˌkɑːrt ˈblɑːnʃ/
1.

carta bianca

complete freedom to do something:

:
•
Congress has effectively given the president carte blanche.
:
blanchcartshopping cartà la carteupset the apple cartput the cart before the horse