The phrase "a complex issue involving" is correct and usable in written English.
You can use it when discussing topics that have multiple facets or factors that contribute to their complexity.
Example: "Climate change is a complex issue involving environmental, economic, and social factors that require comprehensive solutions."
Alternatives: "a multifaceted problem concerning" or "a complicated matter related to".
Note that allocating emission allowances is a complex issue involving political motivation.
To improve task effectiveness of geographically dispersed teams, media selection approaches a complex issue involving media features and user characteristics.
Energy policy design in Europe is a complex issue involving multiple levels of governance, and heavily influenced by institutional contexts.
VOCs pollution is a complex issue involving a wide variability of pollutants that threatens human health and environment.
Fire protection for heritage villages is a complex issue involving multiple factors, especially for heritage villages comprising brick timber framed buildings.
This is a complex issue involving the interaction between technologists and economists to develop and optimise the production process on a reasonably large scale so that financial feasibilities can be properly worked out.
Malone says it's a such complex issue, involving masculinity, biology and language itself.
"This is an extremely complex issue involving producers, suppliers, distributors, local salespeople, and consumers, and we are into absolute simplicity," said Alan Leshner, the chief executive officer of the American Association for the Advancement of Science and a former director of the National Institute on Drug Abuse.
For eukaryotes, transcriptional regulation in is a much more complex issue, involving many redundant binding sites dispersed along genomic sequences.
This paper considers aspects of a series of complex issues involving unacceptable/unusual characteristics primarily in the context of USP's work but with implications for manufacturing science via considerations of process capability and Quality by Design and to measurement science.
The Obama administration legal team wrestled with whether it would be lawful to make Mr. Awlaki a target for death — a proposition that raised complex issues involving Mr. Awlaki's constitutional rights as an American citizen, domestic statutes and international law.
