PU synthetic leather (also known as bi-cast leather, bycast leather or artificial leather, sometimes described as split leather) is a material made with asplit leather backing covered with a layer of polyurethane (hence the term PU leather) that is applied to the surface and then embossed.
Constitution Daily. How a C-grade college term paper led to a constitutional amendment. The 27th Amendment is the most recent amendment to the Constitution, and its existence today can be traced to a college student who proposed the idea in a term paper and was given a C by his professor for the idea.
List of amendments to the United States Constitution. Approximately 11,539 proposals to amend the Constitution have been introduced in Congress since 1789 (as of December 2014). Collectively, members of the House and Senate typically propose around 200 amendments during each twoâyear term of Congress.