The House of Representatives has the power to impeach, and the Senate has the power to try the President, Vice President and all civil officers of the United States. Civil Officers are any government official that requires Presidential appointment and Senate confirmation. This would include the Attorney General, the Director of the IRS, Secretary of the Treasury, all Federal Judges etc. The Congress cannot impeach/try Senators, Representatives or Officers of the Armed Services of the United States. In the IRS and VA situations, officials who were confirmed by the Senate for their positions can be impeached. Many IRS/VA officials at lower levels are Civil Service, and not considered civil officers of the United States, therefore they cannot be impeached. They are subject to civil service disciplinary rules.
If the House impeaches, and the Senate does not convict, is the official in question deprived in any way from further exercising their office?