Parliament consists of the House of Commons and House of Lords. Bills are introduced and debated in both houses before receiving royal assent to become acts. There are several stages of legislative procedure including introduction, committee review, amendments, and debate. Criticisms of the law making process include complex language, over-elaborate acts, and a lack of scrutiny due to time constraints. Parliamentary sovereignty means acts passed by Parliament supersede all other laws, however this has been limited by EU membership and human rights laws.