No. The Universal Postal Union requires you to use the stamps of the country of origin.
No, the President does not have any responsibility. The USPS has a committee that determines the subjects of stamps. Once the design is approved, then they are printed.
The cost of postal stamps are $0.28
In the U.S. Postal Stamps are 42 cents each
What stamps? First postal stamps were used in 1840.
How much is postage stamps in 2012
I really don't think they're all that necessary if you're referring to postal stamps or ink stamps. With regards to postal stamps - most people throw out the envelope and keep the invitation.
You can find books on Historic stamps of America 1978 Postal commemorative society on en.allexperts.com/q/Stamps-Philately-1610/2009/2/books-stamps-great-grandfather.htm
I am not sure what you are asking, but it you are thinking about US stamps denominated as G, the one for first-class domestic mail sold for 32 cents. There were also G stamps for the postcard rate and pre-sorted mail. The reason for the G denomination is that the stamps were printed before new postal rates were set.
You can find 1978 Commemorative stamps of America on about.usps.com/who-we-are/postal-history/stamps-postcards.htm
Who Knew - 2010 Postal Stamps 2-59 was released on: USA: 22 October 2010
Postal stamps are those stamps created to indicate payment for mailing services such as delivery of letters and packages. They are issued by the appropriate agency authroized to do so by the government of a country. There are private post stamps, designed to indicate payment to a private company that does deliveries, such as the Pony Express or UPS. There are semi-postal stamps, stamps sold with a surcharge to raise money for certain needs, such as wars and charities, as well as pay the postage rates.