By Andrew Chung, John Kruzel, David Shepardson WASHINGTON (Reuters) -The Supreme Court seemed inclined on Friday to uphold a law that would force a sale or ban the popular short-video app TikTok in the United States by Jan. 19, with the justices focusing on the national security concerns about China that prompted the crackdown. During about 2-1/2 hours of arguments, the nine justices pressed