"engaged on the topic" is a correct phrase that can be used in written English.
It means that someone is actively involved or interested in a particular subject or topic. Example: "The team was fully engaged on the topic of climate change, spending hours researching and discussing possible solutions."
But this time the White House has made clear that it does not want to engage on the topic, which beyond threatening to distract attention from the health care push could also put further strain on Mr. Obama's broad but tenuous electoral coalition of liberals and moderates, Democrats and independents.
The site will include third-party content and news about hosting, cloud computing and will have a live community portal for visitors to engage on the topic of outsourcing computing.
"Politically, I understand why Romney wants to avoid engaging on the topic.
I catalogue and enter all airline testimonials, post on my site, write my blogs, and engage on the topic via social media.
Soon after, my dad and I started to engage on the topic of Israel in a way we hadn't before.
Frustration was experienced by some field workers in relation to participants seen as 'difficult' if unable to understand information or reluctant to engage on the topic at all.
To arrive at balanced public policy, America needs a plurality of voices in the public dialogue: foreign relations, business, religion - and science, and the overwhelming majority of likely voters want the candidates to engage on the topics of healthcare, climate change, energy, education, and innovation and the economy.
This meant that a large group of doctors, emigrants and non-emigrants, were already interested in and engaged on the survey topic, at the time the survey went live.
The symposium will gather together minds engaged on this topic, which is a good start, but we need to go further.
