From BBC News:
I'm hoping this is another case of Trump talking out loud without having any idea what's going on.Donald Trump has called for November's presidential election to be postponed, saying increased postal voting could lead to fraud and inaccurate results.
He suggested a delay until people can "properly, securely and safely" vote.
There is little evidence to support Mr Trump's claims but he has long railed against mail-in voting which he has said would be susceptible to fraud.
US states want to make postal voting easier due to public health concerns over the coronavirus pandemic.