When a professional is sent on a foreign assignment on behalf of an American company, that expatriate's wife or husband is known as the "trailing

When a professional is sent on a foreign assignment on behalf of an American company, that expatriate's wife or husband is known as the "trailing spouse" if the spouse joins the expatriate at the foreign location. Why have problems involving the trailing spouses of expatriate professionals become more numerous or at least more obvious in recent years? What are some companies doing to solve those problems? What are other suggestions you can provide to mitigate these problems.