For the Federal government, it's primarily to provide for the common defense.
Common defense has many more facets today than it did 200 years ago, for example, unemployment and climate change qualify as threats to common defense and the general welfare. You aren't one of those who thinks a literal interpretation of the US Constitution supplies enough answers for a 21st century republic to survive, are you?
oh bullshit...
People in government decided all by themselves that with a stroke of a pen or a check here or there, they could solve all of the problems facing the nation. But along the way they figured out they needed revenue to do the solving. So they created more crises in order to attach more of our earnings. And to solve the crises, people( employees) were required which in turn require even more taxation and regulation.
The whole system of government placing itself in the role of parent and sibling to the people has gotten out of control...
It was never the intention of the Founders to make the federal government the largest civilian employer in the nation. It was never intended for federal employees to make a career of government. The intent was "service to the people"...That one as a servant to the people did so on a temporary basis. Then they went home back to their normal lives and let the next person in line take over.
Finally, the purpose of the US Constitution is not to "provide answers"....The document is the foundation of our nation. Without it, we crumble.
Yes, every so often the Constitution requires adjustments.
Hence the reason for the Amendment process.
Unfortunately, we have a chief executive who views the Constitution as a barrier or an annoyance.
And to answer your next retort.
Obama basically wiped out our duly passed and signed immigration laws by political fiat. HE decided all by himself that our immigration laws were simply "not to be enforced"....
That is just one example.