Of course not.
Since his first attempt at a military dictatorship, in LA, didn't really succeed, he's had to pull back a bit.
Washington, because of its unique status, is his best shot at fully establishing the precedent that he can institute a military dictatorship in any city he wishes at any time he wishes.
Once the corrupt and compromised conservatives on the Supreme Court rubber-stamp this takeover then he can use that as a precedent to try again in somewhere like LA.