Hostility to immigrants isn’t new to the United States. From the Know Nothings in the 1850s, to Henry Cabot Lodge in the 1890s, to Donald Trump, there were political movements and leaders who demonized immigrants. Are the Know Nothings, Cabot Lodge, or Trump representative of the broader opinion of their times? A new study that uses artificial intelligence to chart the tone of more than 200,000 congressional and presidential speeches on immigration since 1880 provides a surprising historical perspective.

Migration in the Americas has dramatically increased over the past decade due to deteriorating political, economic and humanitarian conditions in several countries, particularly in Venezuela, El Salvador, Guatemala, Honduras and Haiti. High rates of crime, corruption, poverty, environmental degradation and violence all influence people’s decisions to migrate. The power of drug cartels, which can be embedded in government institutions like the police, also plays a key role in prompting migration.

Compared to native-born citizens, immigrants are more frequently involved in founding companies at all scales. A new study finds that, per capita, immigrants are about 80 percent more likely to found a firm, compared to U.S.-born citizens.

Last week, DHS said that robotic are “one step closer” to deployment on the U.S.-Mexico border. Covered with sensors and cameras that can relay information and footage in real time to Customs and Border Protection (CBP), these machines are less cute-video or selfie fodder and more of a civil liberties-invading hellhound.

DHS ST is offering a helping hand (or “paw”) with new robotic dog technology that can assist with enhancing the capabilities of CBP personnel, while simultaneously increasing their safety downrange.

One of the most consequential human responses to climate change is and will continue to be the mass movement of people. Rising temperatures which reduce agricultural opportunities can lead to mass migrations away from struggling communities. As the environmental impacts of climate change increase in scope and severity, more and more people will move to new places to preserve or enhance their lives and livelihoods. How do nations address, and plan to address, the growing wave of migrants fleeing their home countries in search for better living conditions?

A new survey underscores how material needs lead to movement within the Americas — at a high cost to those trying to relocate.

U.S. global technology leadership is under serious threat. Given current trends, it is inevitable that China will overtake the United States. The most powerful—and perhaps only—lasting and asymmetric American science and technology advantage over China is the U.S. ability to attract and retain international S&T talent. But the U.S. government risks squandering that advantage through poor immigration policy.

DHS Counterterrorism Coordinator said that fears the Taliban takeover of Afghanistan could reinvigorate terror groups like al-Qaida and Islamic State, and lead to a surge of attempted infiltrations along the southern U.S. border, have not been realized. “It is just factually inaccurate to frame the southern border as a place where we are seeing a significant number of al-Qaida or ISIS-related terrorists or foreign terrorists,” he said.