To the Senate and House of Representatives.
GENTLEMEN: From information received at the Department of State it is ascertained that owing to unforeseen circumstances several of the marshals have been unable to complete the enumeration of the inhabitants of the United States within the time prescribed by the act of the 23d March, 1830, viz, by the 1st day of the present month.
As the completion of the Fifth Census as respects several of the States of the Union will have been defeated unless Congress, to whom the case is submitted, shall by an act of the present session allow further time for making the returns in question, the expediency is suggested of allowing such an act to pass at as early a day as possible.
ANDREW JACKSON
Andrew Jackson, Special Message Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/201371