Official migration statistics are "not fit for purpose" and leave assessments of the Government's progress in reducing net migration as "little better than a best guess", according to a scathing report.
Analysis on how many non-UK residents are entering and leaving the country is primarily based on "random interviews" of travellers at ports and airports that were introduced to examine tourism trends, the Public Administration Select Committee found.
Just 5,000 migrants a year are identified through the International Passenger Survey and many "may be reticent to give full and frank answers", it warned.
More top news
British firms predict the economy should sustain a "solid" pace of growth for the rest of the year thanks to lower oil prices and inflation.
A charity has warned of a "pressure cooker environment" in schools putting children's mental health and self-esteem in danger.
The twin brother of the police officer shot and blinded by gunman Raoul Moat says his family are still waiting for justice five years later.