Current rules on Fasting for U.S. Catholics

1983 Code of Canon Law: "All Fridays through the year and the time of Lent are penitential days and times throughout the universal Church. Abstinence from eating meat . . . is to be observed on Fridays throughout the year unless they are solemnities; abstinence and fast are to be observed on Ash Wednesday and [Good] Friday. All adults who have completed their fourteenth year are bound by the law of abstinence; all adults [from age 18] are bound by the law of fast up to the beginning of their sixtieth year." The Episcopal Conference can modify these general rules.
In the United States: "Catholics are obliged to abstain from the eating of meat on Ash Wednesday and all Fridays during the season of Lent. They are also obliged to fast on Ash Wednesday and on Good Friday. Self-imposed observances of fasting on all weekdays of Lent is strongly recommended. Abstinence from flesh meat on all Fridays of the year is especially recommended to individuals and to the Catholic community as a whole.