2/18: Outrage grows in Texas, where many families are struggling to survive in the cold without power.

The weather disaster in Texas is gaining new urgency, with many people fighting to survive in their own homes. There are still widespread power outages for a fourth day in a row, though it has been restored in many areas. The food supply is disrupted in parts of the state, causing scarcity at some food banks and grocery stores. And now, nearly a quarter of Texans are under boil water advisories because treatment plants are down. As Texans suffer, politicians and power industry officials are blaming each other for the failure. A study says the COVID variant first found in South Africa reduces antibody protection from the Pfizer vaccine by about two-thirds. Pfizer says there's still no clinical evidence its vaccine is less effective against the variant, but they are working on a booster shot. CBS News has learned the White House and congressional Democrats will unveil a bill today that would reshape the laws to provide a long-promised path to citizenship for most of the undocumented in this country. Many leading Republicans are paying tribute to conservative radio icon Rush Limbaugh, who died of lung cancer yesterday.

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