By Sharon Begley NEW YORK (Reuters) - As the U.S. Supreme Court takes on a make-or-break Obamacare case this week, a growing number of U.S. patients and their doctors are already devising a Plan B in case they lose medical coverage. The Court's ruling, expected by late June, will determine whether millions of Americans will keep receiving federal subsidies to help them pay for private health insurance under President Barack Obama's healthcare law. The White House, which said it is confident the justices will rule in favor of the subsidies that are a key element of Obamacare, said it has no immediate fix if the decision goes the other way. Worried about newly-insured patients such as those who have just begun treatment for cancer or other serious illnesses, they are dusting off playbooks they retired when Obamacare slashed the number of uninsured people.

The following list represents the most streamed tracks on Spotify, based on the number of people who shared it divided by the number who listened to it, from Monday, Oct. 20 to Sunday Oct. 26 via Facebook, Tumblr, Twitter and Spotify.

McDonald's Corp's U.S. restaurants will gradually stop buying chicken raised with antibiotics vital to fighting human infections, the most aggressive step by a major food company to force chicken producers to change practices in the fight against dangerous "superbugs". The world's biggest restaurant chain will announce on Wednesday that within two years McDonald's USA will only buy chicken raised without antibiotics that are important to human medicine. McDonald's policy will begin at the hatchery, where chickens sometimes are injected with antibiotics while still in the shell. She said the company is working with its domestic chicken suppliers, including Tyson Foods Inc, to make the transition.

By Lawrence Hurley WASHINGTON (Reuters) - The U.S. Supreme Court will consider on Wednesday a second major legal attack on President Barack Obama's healthcare law, with conservative challengers taking aim at a pivotal part of the statute that authorizes tax subsidies to help people afford insurance. Roberts and fellow conservative Justice Anthony Kennedy are the most likely swing votes in the new case.