I know 2 ways.
2 times a year, the White House is open to the public. 3rd Sunday of October, and 3 Sunday in one of the months of Spring. As I recall it is the month of March.
If you are a citizen or resident of the United States, you can apply through the congressman of your district at least 3 weeks before the intended visit (maximum 3 months before).
Here the exact information as: https://washington.org/dc-faqs-for-visitors/how-can-i-tour-w
It was on the weekend of the 3rd week of October that we ended up in Washington and decided to visit the “White House”.
The difference between methods 1 and 2 is that in the first case the entrance itself and the tour to the “White House” is closed, and you can walk only through the territory. In the 2nd case, you are satisfied with a personal tour in the "White House". Soon I will use this
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