entered into force – This refers to the date and process by which law goes into effect.

Legislation and contracts may enter into force on:

• A date specified by the contract or legislation.
• When it is promulgated:
    o Parliamentary systems: When it receives Royal Assent by the head of state.
    o Presidential systems: When signed by the President.
• When it receives the requisite majority of votes or ratifications.

“According to government sources, the law should enter into force sometime next year.”

You can also say:
• comes into force
• goes into effect
• becomes effective