According to the immigration plan proposed by President Bush, people living in the United States illegally

Could stay in the country for a short time as "guest workers".

Explanation:

Guest workers were allowed to temporarily stay in the country to serve as low-skill workers that did jobs like forestry, tourism, farming, etc. The idea of guest workers aimed to reduce poverty levels and provide a way for illegal immigrants to gain citizenship without having to stay in their original country, which were often places where citizens had no rights and/or lived in extreme poverty. Guest workers often found themselves working for corrupt employers that made these illegal immigrants pay large fees to even get a chance to become a guest worker. So, while the idea was good in theory; corrupt, greedy employers made it practically impossible for illegal immigrants to be able to obtain their goal of citizenship.