i deported in 04, a result of charge of consp. to fraud, was a legal permanent resident since 1967( 37yrs) all my fam in us. no fam. here. in italy

as a result of this my 2 youger children were adopted.... my oldest is disabled and i cannot find work here in italy and i live in hardship. how long before i can come back....how do i find out ? also what happens to mky social security? 37 yrs is a long time and i feel like a foreigner in my own country.... i''m 57 yrs old now and i''m in depression ....understandably...... pls help me...i don''t know where to start!!!