Whether or not this is true has been the subject of ongoing debate.

The relationship between all these changes is the subject of ongoing debate.

There is an ongoing debate on whether to increase the level of these improvements.

There is an ongoing debate about the use of nuclear energy.

During construction there was ongoing debate about the hospital's future possible use.

Actually this has been an ongoing debate for a while now.

Working out the main influences on John's thought has been an ongoing debate.

The vote will take place immediately after the ongoing debates.

This has been an ongoing debate since 1994 and we need a resolution to it.

There is an ongoing debate over the importance of the "dark period".