The preparation of a copy of the bill in the form in which it has passed the House can be a detailed and complicated process because of the large number and complexity of amendments to some bills adopted by the House. Frequently, these amendments are offered during a spirited debate with little or no prior formal preparation. The amendment may be for the purpose of inserting new language, substituting different words for those set out in the bill, or deleting portions of the bill. It is not unusual to have more than 100 amendments adopted, including those proposed by the committee at the time the bill is reported and those offered from the floor during the consideration of the bill in the Chamber. In some cases, amendments offered from the floor are written in longhand. Each amendment must be inserted in precisely the proper place in the bill, with the spelling and punctuation exactly as it was adopted by the House. It is extremely important that the Senate receive a copy of the bill in the precise form in which it has passed the House. The preparation of such a copy is the function of the enrolling clerk.
In the House, the enrolling clerk is under the Clerk of the House. In the Senate, the enrolling clerk is under the Secretary of the Senate. The enrolling clerk receives all the papers relating to the bill, including the official Clerk's copy of the bill as reported by the standing committee and each amendment adopted by the House. From this material, the enrolling clerk prepares the engrossed copy of the bill as passed, containing all the amendments agreed to by the House. At this point, the measure ceases technically to be called a bill and is termed "An Act" signifying that it is the act of one body of the Congress, although it is still popularly referred to as a bill. The engrossed bill is printed on blue paper and is signed by the Clerk of the House. Bills may also originate in the Senate with certain exceptions. For a discussion of bills originating in the Senate, see Part XVI.