This person called my number with a heavy accent telling me she/he was part of the US Government!!!!  WTF?

Indian scammers most likely.  They are either  pushing bogus grants or are pretending to be the IRS and threatening you with all sorts of bad things unless you pay them money to make it all go away.   Ignore the calls.

You posted this msg at about 3:50 AM east, 12:50 AM pacific. Wow, CWG40!!! No life, or you part of the scam game?

Just came home, after a delayed flight, to these two weird voice mails that sound like scams. Both want me to call back.

It is about 1:12 AM pacific time, 4 AM east. It is strange that CWG40 is busy posting "helpful messages" for Americans at this time of the day, or night should I say. Thanks CWG40, even though you are clearly not an American.

I have been getting repeated messages from someone with an Indian accent telling me either they have a warrant out for my arrest and other calls that they are from the U.S. Department of Legal Affairs at the U.S. Treasury.  Various Caller IDs: (202) 241‑713‍7, (202) 241‑782‍0, UNITED STATES G (888) 782‑793‍7.