The Health Resources and Services Administration is leading a cross-departmental effort to evaluate the text4baby program, especially for underserved settings that many government programs target.

WHITEHOUSE: Office of Science and Technology Policy Blog

"It is very difficult to assess how well the government is progressing toward its target of reducing net-migration to the 'tens of thousands', or to evaluate the effects of specific policy changes, " says Dr Martin Ruhs, Director of the Migration Observatory at the University of Oxford.

BBC: The truth behind UK migration figures