Investigators are trying to figure out how a tremendous explosion and fire broke out at the largest fuel refinery on the West Coast. Mola Lenghi reports. Source

Section 2 of the 14th Amendment permits a state’s number of congressional representatives to be proportionately reduced for instances of denying eligible voters of their rights. Joshua Geltzer, executive director and visiting professor of law at Georgetown’s Institute for Constitutional Advocacy and Protection, joined CBSN to discuss the “reduction clause” and how it could work today. Source

Here’s a look at the top stories making headlines on the “CBS Evening News with Norah O’Donnell.” Source

The president said the $2.5 billion his administration has requested is a “lot,” but they’ll spend “whatever’s appropriate.” Source

Firefighters raced to contain a blaze at the Marathon Petroleum Refinery in Carson, the largest facility on the West Coast. Source

Evelyn Mae Boswell has been missing since December. Her mother and grandma are under arrest for giving police conflicting stories about the girl’s whereabouts. Source

Police advised residents to “stay clear of the area at this time.” Source

Right-wing extremists, including white supremacists, were responsible for a large majority of extremist murders in the U.S. last year. Source

A CBS News poll found only 25% of Democratic debate viewers were impressed with Mike Bloomberg’s performance, the second-lowest out of any candidate. Karen Weaver, the former mayor of Flint, Michigan, is a surrogate for Bloomberg’s campaign and she joined CBSN to discuss is performance. Source

Amazon is cracking down on mask sellers after prices for some products soared into the triple digits. Source