; (2) 60 days imprisonment if the violation is a second violation during the defendant’s period of probation; or (3) 90 days imprisonment if the violation is a third or subsequent violation during the defendant’s period of probation. . (b) Directive to the united states sentencing commission Pursuant to its authority under section 994 of title 28, United States Code, the United States Sentencing Commission shall review and, if appropriate, amend the Federal sentencing guidelines and policy statements applicable to the revocation of probation and supervised release under section 3565 of title 18, United States Code, as amended by this Act. 6. Specialized housing and programs for youth Section 4042(a) of title 18, United States Code, is amended— (1) by redesignating paragraph (D) as paragraph (6) and within that paragraph as so redesignated, by redesignating subparagraphs (i) and (ii) as subparagraphs (A) and (B) respectively; (2) by redesignating paragraph (E) as paragraph (7) and within that paragraph as so redesignated, by redesignating subparagraphs (i) through (vii) as subparagraphs (A) through (G) respectively; and (3) by adding at the end the following: (8) designate correctional facilities or portions of correctional facilities that house youth (as defined in section 3624(g)) separate from other offenders and, to the extent possible, minimize contact between youth and other offenders except in rehabilitative, reentry, or similar programs