Is there an upper age limit for pilots freight only? When I asked my original question below, I should have been more specific. I will rephrase my question, however, I do wish to extend my thanks &amp; appreciation to those who answered my question as previously written!

PLEASE ADVISE WHETHER THERE IS AN UPPER AGE LIMIT FOR PILOTS FLYING STRICTLY AIR FREIGHT AND/OR FOR COMPANIES LIKE fEDEX, UPS, DHL, ETC. THAT FLY A MIX OF AIR FREIGHT, DOCUMENTATION, ETC. FLYING ON AMERICAN (USA) FLAG CARRIERS WITHIN THE USA? AND, WHETHER IT MAKES A DIFFERENCE IF THE SAME USA CARRIER FLIES OUT OF THE USA TO ANOTHER COUNTRY SUCH AS CANADA, MEXICO, CENTRAL AMERICA, SOUTH AMERICA, EUROPE, ASIA, AFRICA, ETC.?  DOES THE US POSTAL SERVICE ITS OWN FLEET OF AIRCRAFT, AND, IF SO, DOES IT HAVE AN UPPER AGE LIMIT FOR FLYING US MAIL AND/OR PARCELS?  THANK YOU!
PRIOR QUESTION LEFT HERE FOR REFERENCE ONLY:
(Please advise if there is an upper age limit for pilots flying aircraft carrying only freight (not passengers) into and out of the USA?)
The only situation in which a US-licensed pilot is subject to an age limit is part 121 scheduled airline service. Other than that there are no age limits, you just have to be able to pass your medical exam.

However, you state that in your scenario the pilot will have to be able to fly cargo in and out of the US. That implies the pilot may have a foreign license, in which case you must refer to that country's regulations.