No limitation shall be placed on the information concerning the background, character, and conduct of a person convicted of an offense which a court of the United States may receive and consider for the purpose of imposing an appropriate sentence. (Added Pub. L. 91–452, title X, § 1001(a) , Oct. 15, 1970 , 84 Stat. 951 , § 3577; renumbered § 3661, Pub. L. 98–473, title II, § 212(a)(1) , Oct. 12, 1984 , 98 Stat. 1987 .) Statutory Notes and Related Subsidiaries Short Title of 1990 Amendment Pub. L. 101–421, § 1 , Oct. 12, 1990 , 104 Stat. 909 , provided that: “This Act [amending provisions set out as a note under section 3672 of this title ] may be cited as the ‘ Drug and Alcohol Dependent Offenders Treatment Act of 1989 ’.” Short Title of 1986 Amendment Pub. L. 99–570, title I, § 1861(a) , Oct. 27, 1986 , 100 Stat. 3207–53 , provided that: “This section [amending sections 3672 and 4255 of this title, enacting provisions set out as a note under section 3672 of this title , and amending provisions set out as a note under section 4255 of this title ] may be cited as the ‘ Drug and Alcohol Dependent Offenders Treatment Act of 1986 ’.”