Front Wheels won't turn

So I drove my truck yesterday all around town had
to take my kid and wife to work it ran fine this
morning go to take my kid to work and start it up
put it in gear and  the front wheels will not turn my
back wheels when I hit the gas turn just fine they
spin just fine but my front wheels won't could it be
that it is because there's a bunch of ice on the
axles in the front from it freezing last night or
what's going on? HELP!!