A view of the opening of the construction sites for the demolition of the collapsed Morandi highway bridge in Genoa, northern Italy, Saturday, Dec. 15, 2018. Genoa's mayor is promising his city will have a new bridge by Christmas 2019 to replace the one that collapsed, killing 43 people. (Luca Zennaro/ANSa via AP)

FILE- This Jan. 20, 2012, file photo, near Cloverdale in New Mexico's Bootheel region shows a gated part of the Diamond A Ranch and is 77 miles south of Lordsburg, N.M., the nearest U.S. Border Patrol station. A 7-year-old Guatemalan girl, picked up with her father and dozens of other migrants along the remote stretch of the U.S.-Mexico border, has died, federal officials said Friday, Dec. 14, 2018. (AP Photo/Russell Contreras, File)

File-This May 24, 2018, file photo shows a Spirit Airlines passenger jet plane, an Airbus 319 model, approaching Logan Airport in Boston. Spirit Airlines tops the latest ratings for on-time flights, a stunning turnaround for a discount carrier that consistently ranked as the tardiest airline in America three years ago. The Transportation Department said Friday, Dec. 14, 2018, that 89 percent of Spirit's flights in October arrived on time, putting Spirit just ahead of frequent winner Hawaiian Airlines and Delta. (AP Photo/Charles Krupa, File)

Protesters on canoes display placard as construction workers dumped a truckload of sediment on the ground and bulldozed it into the sea at Henoko on Okinawa’s east coast to build a runway for a Marine Corps base, Friday, Dec. 14, 2018. Japan's central government started main reclamation work Friday at a disputed U.S. military base relocation site on the southern island of Okinawa despite fierce local opposition. (Koji Harada/Kyodo News via AP)

east leg of the pipeline near St. Ignace as Enbridge prepares to test the east and west sides of the Line 5 pipeline under the Straits of Mackinac in Mackinaw City, Mich. Gov. Rick Snyder has signed legislation Wednesday, Dec. 12, 2018, establishing a panel to oversee a hotly disputed tunnel that will house an oil pipeline beneath the waterway linking Lake Huron and Lake Michigan. Snyder acted Wednesday, a day after the Republican-dominated Michigan Legislature gave the bill final approval. (Dale G Young/Detroit News via AP, File)

Holiday decorations adorn the letters on the toll booth structure on the Holland Tunnel approach, Thursday, Dec. 13, 2018, in Jersey City. Motorists are complaining that two circular wreaths and another in the shape of a Christmas tree, symmetrically aligned above the tunnel's lanes, don't look right. An online petition suggests placing the tree over the letter "A" instead of the "N". (AP Photo/Julio Cortez)

This image made from video shows aftermath of a high-speed train crash at a station in Ankara, Turkey, Thursday, Dec. 13, 2018. The train hit a railway engine and crashed into a pedestrian overpass at the station on Thursday. (DHA via AP)

In this photo taken Oct. 4, 2018, eastbound Interstate 90 traffic passes beneath a wildlife bridge under construction on Snoqualmie Pass, Wash. The stretch of highway crossing the Cascade Mountains cuts through old growth forest and wetlands, creating a dangerous border for wildlife everything from an elk down to a small salamander. The new crossing gives animals in these mountains a safer option for crossing the road: They'll be able to go above it. (AP Photo/Elaine Thompson)

FILE- In this Sept. 19, 2018, file photo a tractor operator picks potatoes at Brett Jensen Farms outside of Idaho Falls, Idaho. On Tuesday, Dec. 12, the Labor Department reports on U.S. producer price inflation in November. (John Roark/The Idaho Post-Register via AP, File)

FILE - In this Dec. 6, 2018, file photo, Japan's Coast Guard ship, top, and U.S. military plane are seen at sea off Kochi, southwestern Japan, during a search and rescue operation for missing crew members of a U.S. Marine refueling plane and fighter jet. The U.S. Marine Corps have declared that five crewmembers dead after their aircraft crashed last week off Japan’s southern coast and that their search has ended. (Kyodo News via AP, File)