Man tries to find and reunite with four children that are taken by the state after wife dies

His wife dies and the state takes four children. Man tries to find and reunite with them. Its a movie that my mother watched before 1993 and cried a lot.(it can be black and white movie, or maybe just the tv was old) While searching he marries again. His new wife tries to help him. In the end he reunites with them. But the children are in worse condition than before. So he thinks that he could care for them better than the state did.