A group of centrist House Democrats on Tuesday unveiled a war powers resolution that would give the Trump administration more leeway on Iran than the measure their leadership is pushing.Why it matters: The effort reflects the extreme reluctance some hawkish Democrats have towards voting for the resolution introduced by anti-interventionist Reps. Ro Khanna (D-Calif.) and Thomas Massie (R-Ky.).Unlike the Khanna-Massie measure, the centrist Democrats' alternative resolution would give the administr...