Assembly Clerk,Michael Sialai, has written to the Immigration Department warning that the officials should not harass MPs seeking to leave the country.
Mr Sialai noted that it is unlawful for MPs to seek security clearance from State House before leaving the country for private or official business.
Our attention has been drawn to concerns by members of the National Assembly that in some instances, they have been asked to produce travel clearance at the Jomo Kenyatta International Airport while travelling outside the country.
"This is, therefore, to request you to bring this information to the attention of the officers working in your office and in various border points and to advise them that no Member of Parliament should be required to produce any approval to travel outside the country," the Clerk explained.
Sialai outlined that only officers under him needed his authorization to travel abroad.
He added that the communication would be applicable to members of the Senate as well.
The new declaration comes in the wake of a strong statement issued by NASA presidential candidate Raila Odinga following an incident where his running mate,Kalonzo Musyoka, was blocked from travelling to Uganda last week.