Under a presidential system, the executive branch is separate from the legislature to which it is not accountable. Some countries allow their highest judicial authority to overrule legislation they determine to be unconstitutional. For example, in Brown v. Board of Education, the United States Supreme Court nullified many state statutes that had established racially segregated schools, finding such statutes to be incompatible with the Fourteenth Amendment to the United States Constitution.

• Human rights, civil rights and human rights law are important fields to guarantee everyone basic freedoms and entitlements.
• William Blackstone, from around 1760, was the first scholar to collect, describe, and teach the common law.
• Robert “Bob” Toll L’66, whose vision and extraordinary generosity transformed the public interest program at Penn Carey Law, passed away on October 6.
• One criticism of bicameral systems with two elected chambers is that the upper and lower houses may simply mirror one another.