High Court Hears Oral Arguments about DUI Laws:  The Supreme Court expressed doubt Wednesday during oral arguments in three cases challenging North Dakota and Minnesota laws, that make it a crime to refuse to test for alcohol in a driver's blood, breath or urine even in the absence of a search warrant.  The AP reports that drivers prosecuted under the laws, which were upheld by state supreme courts in both North Dakota and Minnesota, argue that they violate the Constitution's ban on unreasonable searches and seizures.  Justices "seemed to be searching for a middle ground"; Justice Kennedy took issue with the states' "extraordinary exception" to make it a crime for people to assert their constitutional rights, while Justice Kagan said a breath test is "about as uninvasive as a search can be.  Deputy Solicitor General Ian Gershengorn implored the justices not to assume warrants are available 24/7.  CJLF filed an amicus brief in one of the North Dakota cases, Beylund v. Levi.

Half-Mile Tunnel Found on Border:  U.S. authorities announced Wednesday that a sophisticated cross-border tunnel was discovered, running a half-mile from a Tijuana house to a large lot in San Diego and equipped with an elevator, a rail system, lighting and ventilation.  Elliot Spagat of the AP reports that investigators are unsure when the tunnel was completed but that the tenants operating the San Diego wooden pallet business, where the tunnel ended on the U.S. side, arrived about a year ago.  Investigators began monitoring the area last fall after noticing suspiciously heavy traffic in the lot.  Six people were arrested last Friday in connection to the tunnel.  Over a ton of cocaine and seven tons of marijuana were seized.  The tunnel in the 13th sophisticated secret passage found along California's border with Mexico since 2006.