Donald Trump vowed to give US adults $5,000 each - a vow that would cost more than $1 trillion - before claiming that Democrats were bringing communism to America

The US president's US$1.35 trillion pledge raises a number of questions, and he has not specified where the money would come from.

US President Donald Trump has promised a $5,000 payment to every adult American if Republicans win control of both chambers of Congress in November’s midterm elections.

With approximately 270 million US adults, the idea would cost around US$1.35 trillion.

Donald Trump proposes a $5,000 dividend for every US adult if Republicans retain Congress, with the money required to be spent in the US.