There are some people out there who think that a Congressman has to invite you to visit the White House. How silly. Absolutely ridiculous. There are even Americans who think this.
Prior to 9-11, visiting the White House was easy. You got in line and went in and toured the White House (except on Sundays and Mondays.) One could write one's Congressman to get onto the extra special tour (more rooms), but the regular tour required little effort except to get in line outside the White House and wait. At one time, the White House was the only home of a head of state opened to the public. Both types of tours were free.
But September 11, 2001 changed every thing. After all, the White House was one of the targets. The White House eventually reopened after but to new rules. The tours remain free, but now you contact your congressman or senator to get the ticket. They are not inviting you. However, one must be in a group of ten or more, and you must go through your congressman or senator.
Congressmen and Senators are not inviting you. You are asking for the tickets, plain and simple, and there are certain security procedures to go through as well. There is a catch, however. You can apply for the tickets (with a group or be added to a group), but there is no guarantee that you will be able to get a ticket. Congressmen in the D.C., area get more requests from their constituents to visit the White House, but only a certain number of people can tour the White House each day. Competition is stiff. Since March, my Congress has had eight approvals and 350 denials for tickets. (The White House Visitors' Center makes the final decision.)
International visitor must be wondering how they can see the President's House. Are foreigners banned from visiting? Some perhaps, but if you are planning to visit Washington, D.C., and want to see the White House, you should contact your country's embassy for more information.