So who does anyone think has the power to put her in prison?
Does anyone think that Eric Holder would put her in prison?
His JD is the only one who could.
Even then, a JD prosecutor would try her in front of a judge and jury.
I don’t know where people get the idea that Issa or anyone in Congress can put her in jail.
If found in Contempt the person can be arrested under a warrant of the Speaker of the House of Representatives or President of the Senate, by the respective Sergeant at Arms.
Statutory criminal contempt is an alternative to inherent contempt.
Under the inherent contempt power Congress may imprison a person for a specific period of time or an indefinite period of time, except a person imprisoned by the House of Representatives may not be imprisoned beyond adjournment of a session of Congress.
Imprisonment may be coercive or punitive.
Some references
[1] Joseph Storys Commentaries on the Constitution, Volume 2, § 842
http://press-pubs.uchicago.edu/founders/print_documents/a1_5s21.html
[2] Anderson v. Dunn - 19 U.S. 204 - And, as to the distance to which the process might reach, it is very clear that there exists no reason for confining its operation to the limits of the District of Columbia; after passing those limits, we know no bounds that can be prescribed to its range but those of the United States.
http://supreme.justia.com/cases/federal/us/19/204/case.html
[3] Jurney v. MacCracken, 294 U.S. 125
http://supreme.justia.com/cases/federal/us/294/125/case.html
73rd Cong., 78 Cong. Rec. 2410 (1934)
https://archive.org/details/congressionalrec78aunit
[4] McGrain v. Daugherty, 273 U.S. 135 - Under a warrant issued by the President of the Senate the Deputy to the Senate Sergeant at Arms arrested at Cincinnati, Ohio, Mally S. Daugherty, who had been twice subpoenaed by the Senate and twice failed to appear.
http://supreme.justia.com/cases/federal/us/273/135/case.html
[5] Rules of the House of Representatives, Rule IV Duties of the Sergeant at Arms - [] execute the commands of the House, and all processes issued by authority thereof, directed to him by the Speaker.
http://www.gpo.gov/fdsys/pkg/HMAN-105/pdf/HMAN-105-pg348.pdf
[6] An analysis of Congressional inquiry, subpoena, and enforcement
http://www.constitutionproject.org/documents/when-congress-comes-calling-a-primer-on-the-principles-practices-and-pragmatics-of-legislative-inquiry/