President Donald Trump and Vice President Mike Pence meet with Senate Minority Leader Chuck Schumer, D-N.Y., and House Minority Leader Nancy Pelosi, D-Calif., in the Oval Office of the White House, Tuesday, Dec. 11, 2018, in Washington. (AP Photo/Evan Vucci)

John Flickner, 78, holds his medical marijuana vaporizer inside a Niagara Falls, N.Y., homeless shelter, Friday, Dec. 7, 2018. Although he has a prescription, the wheelchair-bound Flickner was evicted from a federally subsidized housing facility that has a zero-tolerance policy on drugs, highlighting the conflict between state and federal marijuana rules. (AP Photo/Carolyn Thompson)

FILE - In this Tuesday, Dec. 5, 2018 file photo, demonstrators stand at a makeshift barricade set up by the "yellow jackets" protesters to block the entrance of a fuel depot in Le Mans, western France. Even proponents of carbon taxes acknowledge that an increase in fuel taxes can disproportionally hurt low-income people. Energy costs make up a larger portion of their overall expenses, so a fuel price increase eats up more of their paycheck and leaves with less to spend. (AP Photo/David Vincent)

Snow covers the perimeter of the General Motors' Lordstown plant, Wednesday, Nov. 28, 2018, in Warren, Ohio. Even though unemployment is low, the economy is growing and U.S. auto sales are near historic highs, GM is cutting thousands of jobs in a major restructuring aimed at generating cash to spend on innovation. GM put five plants up for possible closure, including the plant in Lordstown. (AP Photo/John Minchillo)

In this Nov. 26, 2018, photo, President Donald Trump speaks at a rally in Biloxi, Miss. Trump said Tuesday, Nov. 27, that he was “very disappointed” that General Motors was closing plants in the United States and warned that the White House was “now looking at cutting all GM subsidies,” including for its electric cars program. (AP Photo/Alex Brandon)

In this Nov. 26, 2018, photo, President Donald Trump speaks at a rally in Biloxi, Miss. Trump said Tuesday, Nov. 27, that he was “very disappointed” that General Motors was closing plants in the United States and warned that the White House was “now looking at cutting all GM subsidies,” including for its electric cars program. (AP Photo/Alex Brandon)

An auto transport truck full of new cars drives out of the General Motors Lordstown plant, Tuesday, Nov. 27, 2018, in Lordstown, Ohio. Even though unemployment is low, the economy is growing and U.S. auto sales are near historic highs, GM is cutting thousands of jobs in a major restructuring aimed at generating cash to spend on innovation. GM put five plants up for possible closure, including the plant in Lordstown.(AP Photo/Tony Dejak)

FILE - In this April 13, 2014 file photo two cows fight during the traditional "Combats de Reines" ("Battle of the Queens"), a cow fight in Bussy-Chardonney, western Switzerland. During the combat the cows simply push forehead against forehead. They also use their horns in different ways. Swiss will decide on Sunday whether to ban farmers from removing cow horns. (Jean-Christophe Bott/Keystone via AP, file

FILE - In this Feb. 4, 2015 file photo, workers whose company is contracted by Brazil's state oil company Petrobras throw their work uniforms at the company's building headquarters to protest corruption, in Rio de Janeiro, Brazil. Brazil's President-elect Jair Bolsonaro on Monday, Nov. 19, 218, named Roberto Castello Branco, a pro-market reformer, as future chief executive of the country's state-controlled oil company, Petrobras. Castello Branco, a former member of Petrobras' board, has advocated privatizing the oil giant. (AP Photo/Silvia Izquierdo, File)