[moonrab]

Can ban the Malaysian right group from entering Singapore under FICA.
Foreign Interference (Countermeasures) Act..

Countering Hostile Information Campaigns (HICs).

FICA empowers the Minister for Home Affairs to issue FICA directions to various entities such as social media services, relevant electronic services, internet access services, as well as persons who own or run websites, blogs or social media pages, to help the authorities investigate and counter hostile communications activity that is of Foreign Origin.

In Asean, members do not interface with each other countries internal affairs.