The CBP released a statement on its procedures for handling L petitions under NAFTA. Our experience is that CBP officers have a far greater grasp of the L regulatory standards and far less of a political agenda than their US Consulate brethren and that well-prepared L petitions are met with routine approval at the border.
The USCIS followed up on plans announced last fall to increase the vailidity period of TN visas from 1 year to 3 years. this would apply to both new admissions as well as extensions. The proposed rule is expected to be published in the Federal Register shortly. Many IT cos. use the TN category for computer systems analysts. THe USCIS announcement can be found below.