Details have emerged claiming that five MPs and other parliamentary staff were denied US visas last month when they sought to travel to attend an international conference in Tennessee.
Reports by the Standard newspaper have intimated that the MPs and parliamentary staff were denied the visas over links to crimes such as drugs and links to terrorism.
However, National Assembly clerk Michael Sialai stated that he was not aware of any MP or staff who was denied a visa.
Mr Sialai also pointed out that visa application is a personal matter and it is, therefore, difficult to know the grounds of denial.
Tight US immigration laws
He added that whenever an MP or staff wish to travel out of the country on official duties, the institution facilitates the application for the relevant visa.
The United States has stiff policies which they use to foreigners visas if they have information about their involvement in the drugs trade, terrorism or beneficiaries of proceeds of crime.
According to the paper, initially the number of MPs who had not been cleared to travel to the US was large, however, some were cleared after a high-level intervention.
The US says it denies foreigners travel visas if there is evidence that they have breached sections of the Immigration and Nationality Act (INA).