大使馆 has the final authority, 教育领事 makes sure you meet basic requirements and provide sufficient documents
2.如果领事把相关的申请表格寄给我,是不是就基本没问题
80%
3.我的先生孩子都在美国,先生是绿卡,孩子在美国出生(孩子出生早产很长时间,身体弱,在美国医疗条件好一些,这也是我不得以申请J1豁免想留在美国的原因之一),会不会有所帮助---我是说使领馆的官员会否考虑这些因素来签No oblection
Not relevant (better not say that, may make them unhappy)
Just tell them you cannot go back to serve 2-years due to your research work here