In short:

The prime minister's office had been planning a media event at the Marrickville Golf Club when the ABC revealed Anthony Albanese's undisclosed honorary membership to the club.

Briefing documents for the event make no reference to the grant being used to fix sewerage issues, as the prime minister claimed.

What's next?

A Senate inquiry is scrutinising more than $500 million in grant funding that favoured Labor-held seats.