WASHINGTON—A bipartisan group of U.S. senators is pushing to protect service members from being forced out of the military by the Trump administration, which is trying to reinstitute a ban on military service for transgender individuals.

Sens. John McCain (R., Ariz.), Susan Collins (R., Maine) Kirsten Gillibrand (D, N.Y.) and Jack Reed (D, R.I.) introduced legislation that would prevent the Pentagon from removing currently serving members based on their gender identity.

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