It all started with the biggest tax giveaway to the top 1% and has turned politics upside down ever since. The wealthiest 1 percent of American households own 40 percent of the country's wealth, according to a new paper by economist Edward N. Wolff. That share is higher than it has been at any point since at least 1962, according to Wolff's data, which comes from the federal Survey of Consumer Finances. According to the Credit Suisse Global Wealth Report, the world's richest 1 percent, those with more than $1 million, own 44 percent of the world's wealth. Their data also shows that adults with less than $10,000 in wealth make up 56.6 percent of the world's population but hold less than 2 percent of global wealth.