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
Boxer Amir Khan sparked laughter in Las Vegas when he aimed a verbal jab at Republican presidential candidate Donald Trump.
The chart-topping NHS Choir who beat Justin Bieber to number one have signed a Hollywood film deal to tell their success story.
Janet Jackson is expecting her first child at the age of 49, according to reports.