Debates on a controversial new trade deal between the European Union (EU) and the United States have been marked by "dog whistle" politics which must change if progress is to be made, according to MPs.
The Business Select Committee said arguments about the Transatlantic Trade and Investment Partnership (TTIP) had been over-simplified and misrepresented.
In its final report of the current Parliament, the committee called on the Government to stop saying the deal could be worth £100bn to the UK and come up instead with a "comprehensive assessment" of the economic benefits and risks for different sectors.
The MPs also pressed the Government to make an "unequivocal" statement that public services will be protected to counter warnings that the deal would lead to the privatisation of the NHS.
Ministers hope TTIP can be agreed by the end of the year but the MPs said too much detail remained "beyond public scrutiny".
The report said: "TTIP has the potential to have a significant impact on the UK economy."