On May 11, 2005, President George W. Bush signed the REAL ID Act into law. The purpose of the Act was to establish a national ID database, but with widespread state opposition, REAL ID has gone unimplemented.

On May 4, 1970, the Supreme Court ruled in Walz v. Tax Commission that laws granting tax exemptions to religious bodies did not violate the First Amendment’s Establishment Clause.

On April 27, 1861, President Abraham Lincoln suspended the writ of habeas corpus, allowing the military to detain Confederate sympathizers indefinitely.

On April 20, 2005, President Bush signed the Bankruptcy Abuse Prevention and Consumer Protection Act into law, representing the most sweeping changes to consumer finance law in recent history

On April 13, 1942, the Supreme Court ruled in Valentine v. Chrestensen that the First Amendment does not protect commercial speech because it is motivated by profit.

On April 6, 1992, the Supreme Court decided Jacobson v. United States, strengthening the entrapment defense by making the test easier for defendants to meet.

On March 30, 2010, President Obama signed the Student Aid and Fiscal Responsibility Act into law, and it abolished FFEL program, cutting private lenders out of the student loan process.

On March 23, 1999, the Supreme Court decided Kumho Tire Co. v. Carmichael, ruling that the Daubert test applied not only to scientific expert witnesses, but all experts.

In ruling in 1810′s Fletcher v. Peck, the Supreme Court first declared a state law as unconstitutional, a practice that has led to some very famous cases.

In ruling on U.S. v. Reynolds in 1953, the Supreme Court recognized the State Secrets Doctrine, which allows the government to exclude from evidence documents related to national security