As far as I know most countries already do that more often than you ask for. Everyone had a strong response to the 2009 pandemic, with plans, PPE stockpiles and such. The virus turned out very mild, which lead to heeding to the advice of epidemiologists to be politically costly. But in the USA pandemic preparedness was only effectively disassembled with the 2017 update.
As an employee of a state department of health, I can honestly say we were blindsided and had no plan. At most, our plan was "Do what the CDC says." Even if the CDC had been on top of things, much more could've been done and planned.
Well sure, but all this is a somewhat-conscious decision by politicians: "basing on experience, doing the pandemic preparations as advised by epidemiologists is more expensive than absorbing a pandemic not prepared (even if that somehow happens during our term)".
As far as I know most countries already do that more often than you ask for. Everyone had a strong response to the 2009 pandemic, with plans, PPE stockpiles and such. The virus turned out very mild, which lead to heeding to the advice of epidemiologists to be politically costly. But in the USA pandemic preparedness was only effectively disassembled with the 2017 update.