From the Department of Homeland Security

Stats on U.S. Border Control Operations

Article discussing immigration stats with links to those statistics. From the Migration Policy Institute.

"...reports focusing on Border Patrol apprehensions along the border, Border Patrol staffing, criminal enforcement in the federal district courts and government inspections activities at the designated ports of entry."

Presents a snapshot of the major migration trends worldwide for the year 2015

Up to date statistics on migration flows to Europe. Reported weekly.

"Measures policies to integrate migrants in all EU Member States, Australia, Canada, Iceland, Japan, South Korea, New Zealand, Norway, Switzerland, Turkey and the USA."

Use their "interactive maps to learn about international migration, including immigrant and emigrant populations by country and trends in global migration since 1960."