The phrase "a key issue here" is correct and usable in written English.
It can be used to highlight an important point or concern in a discussion or analysis.
Example: "In our analysis of the project, a key issue here is the lack of funding, which could hinder our progress."
Alternatives: "a crucial point here" or "an important matter here".
A key issue here is that Ghani and Abdullah have different regional and ethnic powerbases.
But Mr. Huckabee also struck many populist themes that have deep appeal to middle-class Iowans and farmers, promising to tailor his economic priorities to their needs and taking tough stands on a key issue here, immigration.
So training is a key issue, here".
That's a key issue here in Garfield County, which leads the state in drilling permits, and in Carbondale, where many residents fear the wave of drilling could reach the beautiful Thompson Creek area west of town.
A key issue here is that the numbers of epitope residues and non-epitope residues are imbalanced.
A key issue here is ensuring that educational and training budgets in end of life care are ringfenced.
The key issue here is to design a continuous nanofiber heterojunction with a sufficient interfacial area for the efficient charge transfer.
On 30 July 2002, Goldsmith warned Blair that on the question of using force in self-defence, "the key issue here is whether an attack is imminent.
So, when you wish to achieve a lifestyle of money, love and happiness, the key issue here is to sign up for the very best dating sites that will give you a choice of hundreds of hopeful singles.
Alan Leong, not to be confused with C.Y. Leung, generated a great deal of publicity and political capital for himself and the Civic Party when he ran against Tsang in 2007, but most observers say Beijing would never support the selection of a pro-democracy politician and that might actually be the key issue here.
Daniel Kammen, chief technical specialist for renewable energy and energy efficiency, The World Bank: The key issue here — far larger than the debate over a 17% or an 84% excess emissions per [barrel] of tar sands oil vs. light sweet crude — is highlighted by, [but] not put into full energy and climate context by, the compelling and depressing Charles Homans Foreign Policy article [link].
