Why are you so apologetic?
Do some resistance exercises and strengthen that spine. You have every right as an American to be angry at seeing throngs of foreign nationals marching through your city, waving the flag of their home country, and demanding that we cowtow to their demands. Kinda gives you some idea of what the Czechs must've felt like in 1938.
It pisses me off to know that these Mexican nationals have managed to threaten enough members of the US Senate into bending over and grabbing their ankles. Government officials of the United States should not feel more beholdened to Mexicans than they do to the people that voted them into office.