Robert Siegel

This week marks the centennial of U.S. entry into World War I, a conflict that shattered empires and cost millions of lives. On the American home front, it made this country less culturally German.

Today, when the question of loyalty of immigrants has again become contentious, what happened a century ago has special relevance. World War I inspired an outbreak of nativism and xenophobia that targeted German immigrants, Americans of German descent and even the German language.

An estimated 11 million immigrants live and work in the United States illegally. Their fate is one of the big policy questions facing the country. The story of how that population grew so large is a long one that's mostly about Mexico, and full of unintended consequences.

Prior to the 1920s, the U.S. had few restrictions on immigration, save for a few notable exclusions.

"Basically, people could show up," says Jeffrey Passel, of the Pew Research Center.

For workers in Mexico, crossing into the U.S. made a lot of economic sense, then and now.

In the world of electric cars, there's a chicken-and-egg problem: More people might buy electric vehicles, or EVs, if they were confident there would always be a charger nearby. And businesses might install more chargers if there were more EVs on the road.

The Chevrolet Bolt EV, which is now hitting the market, could be the first of a new wave of game-changing electric vehicles.

Its longer range and lower price could attract new buyers to the electric car market, but there's uncertainty over whether federal tax incentives will continue and whether California will be allowed to keep tougher emissions rules under President Trump.

Copyright 2017 NPR. To see more, visit http://www.npr.org/.

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