The phrase "a simple matter for" is correct and usable in written English.
It can be used to indicate that something is easy or straightforward for someone to do or understand.
Example: "For an experienced programmer, debugging this code is a simple matter for them."
Alternatives: "an easy task for" or "a straightforward issue for".
The four-year residency requirement is a simple matter for a player already playing there professionally.
For one thing, it is a simple matter for police officers to stand on a subway platform and wait for a train to deliver offenders to them directly.
The rise of smaller turbocharged engines does not necessarily mean that meeting future fuel-economy standards will be a simple matter for automakers.
It is a simple matter, for example, to buy savings bonds over the World Wide Web, as well as other Treasury securities.
Many said that mandatory evacuation orders came too late, or that leaving, even with transportation, was not a simple matter for older residents.
Such is not the case with the Flat season, which provides so many opportunities that it is a simple matter for the best horses to avoid each other.
To that end, starting today, all of the products in the family are also on the same release schedule, making it a simpler matter for customers using more than one product in the stack to keep all of them updated.
According to Ms. Puett, who is now 51, her signature style was never a simple matter of longing for the past.
After its abolition the slave trade – which the writer and former slave Olaudah Equiano described as "entirely a war with the heart of man" – rapidly became a simple matter of economics for the British government.
Complications like his are hardly a reason to restrict any nation's access to these lifesaving drugs, but they are a reason to scold those who would turn AIDS treatment into a simple matter of raising money, paying for pills and watching miracles occur.
Book publishers prefer to regard fact-checking as the responsibility of authors, which, contractually, comes down to a simple matter of who doesn't pay for what.
