The United States did not fall in Jericho. Rather, it splintered in two, with Western states coming under the hegemony of the self-declared, corporate-dominated "Allied States of America" after the United States's major cities were destroyed. But the U.S. continued to exist, and the federal government moved its capital to Columbus, Ohio.
Oh, but of course it did.
The line of succession was effectively broken and surviving authorities banded together to reform the US government. The same as in Shattered Union
"Pride cometh before the Fall", I presume. That points towards a Typhon Pact member, I'd guess. The Federation is humble and decent.