It's all stat juking. They can write bigger budgets because they are allowed to assume $x per immigrant in the economic plans, so increasing immigration means more budget funds.
The problem is that that assumption is highly dependent on who is immigrating. A highly educated healthy person will make a net contribution, others will cost the government and the governments will turn to subsidizing their employment in the private sector to reduce the cost. This becomes wage lowering pressure. Businesses that rely on mass labor get a government subsidized labor force that keeps their local labor in check.
It's all stat juking. They can write bigger budgets because they are allowed to assume $x per immigrant in the economic plans, so increasing immigration means more budget funds.
The problem is that that assumption is highly dependent on who is immigrating. A highly educated healthy person will make a net contribution, others will cost the government and the governments will turn to subsidizing their employment in the private sector to reduce the cost. This becomes wage lowering pressure. Businesses that rely on mass labor get a government subsidized labor force that keeps their local labor in check.