Updated 3:45 a.m. ET

British voters have delivered a stunning victory to Prime Minister Boris Johnson and his Conservative Party, giving the champion of Brexit a large majority in the House of Commons and the support he needs to take the United Kingdom out of the European Union in January.

Major League Baseball announced changes to its drug use and testing policies on Thursday, removing marijuana from its "drugs of abuse" while announcing mandatory tests for cocaine and opioids. The policy will be effective starting in 2020 during spring training.

Players who test positive for prohibited substances, which include fentanyl and LSD, will be evaluated and prescribed a treatment plan. Those who don't obey the league's plan may be punished.

Congressional negotiators have reached tentative agreement on a package of bills to fund the government through the end of September 2020. Lawmakers have until the end of next week to approve spending legislation to avert a government shutdown. The White House has not publicly weighed in on the agreement.

The deal covers all 12 regular spending bills, which total $1.3 trillion. This figure was agreed to in a bipartisan budget package that was enacted by the president this summer.