Bengaluru, Oct. 4 -- US President Donald Trump's decision to raise the H-1B visa fee for new applicants has hit a legal hurdle, and it is not from the information technology sector, which accounts for most of these visas.

At least nine complainants, including employee unions from sectors such as healthcare, education, agriculture, automobile, and aerospace, have filed a complaint through seven law firms in a California court against Trump's order, requesting that the court deem the proclamation unlawful and process H-1B visas in accordance with existing laws.

The law firms are Justice Action Centre, Democracy Forward Foundation, Kuck Baxter Llc, South Asian American Justice Collaborative, Joseph & Hall, P.C., Bless Litigation Llc, and S...