There is an ongoing debate on the issue.

关于这个问题争论还在继续。

《柯林斯英汉双解大词典》

The unthinkable has happened: Kilroy has started a national debate on an issue of fundamental importance.

不可思议的事发生了：在一个至关重要的问题上，克洛伊发动了一次全国性的辩论。

youdao

Scientists debate fate of polar bear population (For an article about a summit called to debate this issue).

Scientists debate fate of polar bear population(关于举行会议研究此问题的文章)。

youdao

But,like circumcision, it is an issue of public debate.

VOA: special.2009.04.01

Has our view of responsible congressional oversight changed so profoundly that we can no longer openly and candidly debate an issue of paramount American interest?

CENTERFORSECURITYPOLICY: Center For Security Policy

At the very least, they expect the bill to stimulate public debate on an issue that, until recently, had been almost entirely absent in the nation.

CNN: Death, Be Not Proud

Early Day Motions allow MPs to call for a debate on an issue of interest to them, and colleagues can add their signatures as a sign of support.

BBC: Adjournment debate