Christian Porter says he will not resign.
The sailors were rescued off the coast of Australia.
A total of 20 survivors had been transported to the hospital after a Marine V-22 Osprey crashed during training drills in Australia.
The aircraft went down during routine training exercises.
40% of engagements take place between Thanksgiving and Valentine's Day, according to industry experts.
CBP officials say the Tucson area, including Nogales, is already seeing the highest number of migrants coming into the country.
25 million U.S. students use diesel-powered school buses daily, prompting debates on cleaner alternatives.
