U.S. Constitution Article 4 Section 4:
"The United States shall guarantee to every State in this Union a Republican Form of Government,
and shall protect each of them against Invasion;"
U.S. Constitution Article 4 Section 4:
"The United States shall guarantee to every State in this Union a Republican Form of Government,
Nobody in government sees this as an invasion because they don't have to live on the same block with them or wait in the same hospital emergency room behind 40 illegal immigrants!
Yep, "SHALL"!