The OCC ensures that national banks and federal savings associations operate in a safe and sound manner, provide fair access to financial services, treat customers fairly, and comply with applicable laws and regulations.
“Spare no effort” think of “effort” as something like tangible apples.
Lets say North Korea needs apples, then south Korea says “we will spare no apples helping north korea” as in they won’t hold on to any apples for themselves.
Or lets say north Korea needs a tire. “We will spare no tire” they won’t keep a spare tire in the back of their car, they will use it to help.
The wording is kinda weird, but thats what the phrase means.