In April 1914, he ran on the Socialist Labor ticket for Congress at a special election in New Jersey's 7th congressional district, to fill the vacancy caused by the death of Robert G. Bremner, and polled 104 votes.
[2] Afterwards he lived at several boarding houses in different locations in New York City, ending up in 1920 in Brooklyn, while his wife Irene remained in their home in Maywood where he spent many week-ends with her.
On January 12, Assemblyman George H. Rowe offered a resolution contesting Jager's eligibility to office because he had called President Wilson a murderer, had served a six-month prison term, and was a resident of New Jersey.
[3] On March 29, the Assembly Committee on the Judiciary presented its final report in the matter of the eligibility of Henry Jager.
There was consensus that the claim that Jager had called the President a murderer was false, and that neither a conviction for disorderly conduct and a short prison term, nor membership in the Socialist Party, were barring anybody from public office.