“ It is the sense of Congress that— (1) success in combating the construction and use of cross-border tunnels requires cooperation between Federal, State, local, and tribal officials and assistance from private land owners and tenants across the border between Mexico and the United States; (2) the Department of Homeland Security is currently engaging in outreach efforts in California to certain landowners and tenants along the border to educate them about cross-border tunnels and seek their assistance in combating their construction ”

“ Any person convicted of using a tunnel or subterranean passage to smuggle aliens, weapons, drugs, terrorists, or illegal goods is subject to an enhanced sentence for the underlying offense. Additional sentence enhancements would further deter tunnel activities and increase prosecutorial options. ”