Rahu in the 4th house is very good for foreign settlement.

Many people look for settlements abroad but without Rahu support, it is not easily possible.

Normally Rahu spoils bhava wherever it sits. 4th house indicates home town and motherland.

When Rahu is placed in the 4th house it spoils the 4th bhava and native finds it difficult to live in their hometown.

Whereas Rahu in 4th aspects or influence work area makes native to work in far distant forien lands.

Rahu is known for giving good fortune in unknown places or foreign land.

Rahu no doubt gives foreign settlement but indicates some troubles to the mother also.

Rahu causes trouble to living matter  (mother) and helps in growing nonliving matters like assets etc.