It is normally given in the House which holds a massive amount of people.
She is Speaker of the House and is in charge of the invitation, and she said no.
There is no where else with that large of a seating capacity at the Capital area.
Yes, he can give it somewhere else, but having all of Congress there is less likely to happen and will look just like a Rally instead.
Yes, he can still give it there - but I think he is trying to avoid acting like a "dictator" and wants to do it the traditional way.
No. It is normally given in the House which holds a huge amount of people.
The Oval Office is tiny.
Nancy can't stand the thought of having to sit behind POTUS during the SOTU.
I think she would chew so hard on those dentures they would explode during the speech.
Senate Chamber vs House Chamber
FIRST 2 PHOTOS OF SENATE
SECOND 2 PHOTOS OF HOUSE.
You can see that the House is significantly larger and holds more seats.