Should the States build a wall to keep out the immigrants?

My God the wall is NOT meant for "immigrants" but for ILLEGAL immigrants. The Czech Republic helps patrol Hungary's border wall with Serbia (which works by the way) to keep illegals out at the same time I am half way through the process of securing citizenship there. Of course I am doing it LEGALLY but then such things as citizens demanding people follow their laws doesn't seem very important to a lot of people here