This issue was raised in Home Office Questions on the 1st April 2019, you can see the Minister’s response below.
Over a third of my constituents do not earn enough to sponsor a visa for a family member from outside the EEA. Will the Minister consider revising the minimum income requirement, to provide a pathway for minimum wage employees to be reunited with family members?
The minimum income threshold was set after consideration of advice from the independent Migration Advisory Committee. The Supreme Court has endorsed the lawfulness of that approach and agrees that the minimum income requirement strikes a fair balance between the interests of UK citizens wishing to sponsor a non-EEA spouse and of the community in general.