at issuethe problem or subject at issue is the most important part of what you are discussing or considering
[TahlilGaran] Dictionary of Contemporary English ▲
at issue adj. phr. 1. In dispute; to be settled by debate, by vote, by battle, or by some other contest.
His good name was at issue in the trial. The independence of the United States from England was at issue in the Revolutionary War. Compare: IN QUESTION.
2. Not in agreement; in conflict; opposing.
His work as a doctor was at issue with other doctors' practice. Synonym: AT ODDS.
[TahlilGaran] English Idioms Dictionary ▲