Analysis :: Cross Joins Across User Defined Hierarchies Aren't Supported

I have some confusion on crossjoin function within MDx.while I try to crossjoin the different level sets of same Hierarchy. It shows error as

For example.
‘The Customer Geography hierarchy is used more than once in the Crossjoin function.’
select {
{[Customer].[Customer Geography].[Country].&[United States]}*
{[Customer].[Customer Geography].[State-Province].members}}
on 0
FROM [Adventure Works]
WHERE Measures.[Internet Sales Amount]

Cannot we Cross joins across user defined hierarchies ,or they aren't supported .?Coz I really need to implement as above MDx within my real Cube.I try to implement by making as another Hierarchy Member but it doesn’t gives the value result as what we want/need.with

member [Customer].[Country].[United States ]as [Customer].[Customer Geography].[Country].&[United States]
select {
{[Customer].[Country].[United States ]}*
{[Customer].[Customer Geography].[State-Province].members}}
on 0
FROM [Adventure Works]
WHERE Measures.[Internet Sales Amount]