It's really unfair of him as there should be some amendments in this law for people who are physically challenged.

amendments 是名词 amendment 的复数形式。amendment 由动词 amend（修改、修订）加上名词后缀 -ment 构成，表示"修正案"或"修订条款"的意思。在法律语境中特指对法律条文的具体修改内容。