The proportion of the global population living on less than $1.90 per person per day has fallen—from 18 percent in 2008 to 11 percent in 2013, according to the

The proportion of the global population living on less than $1.90 per person per day has fallen—from 18 percent in 2008 to 11 percent in 2013, according to the World Bank. In the United States, however, the poverty rate has been more stubborn—41 million people lived below the country’s poverty line in 2016, about 13 percent of the population, nearly the same rate as in 2007. Is this a fair comparison? I thought that the poverty line in the US was defined relative to median income. If the definition is changed to $X per day after inflation then maybe the US doesn't look so bad? Also I would like to see some kind of adjustment for immigration. Imagine that the US lifts 10 million citizens out of poverty and at the same time accepts 10 million poor immigrants. Is it fair to say the US has made no progress on poverty?