cancel a referendum about any Laws before they gain legal force; if a Veto is cast, the bill will not gain legal force;

[UpLib]

cancel a referendum about any Laws before they gain legal force; if a Veto is cast, the bill will not gain legal force;

This sentence is also not very clear imo.
Why could a referendum be possibly cancelled by the senate ?

Is the below sentence more correct ?
vetoing any Laws before they gain legal force; if a Veto is cast, the bill will not gain legal force;