Understanding Hypocrisy

The TEA Party element of the Republican Party wants to delay implementation and/or change of Obamacare.  The Democrats' refrain is,"You can't.  It's the law, and the law is the law."  Yet, Obama has changed certain parts of Obamacare at will to suit his political needs.
In the ongoing deficit and debt limit negotiations (?) the Democrats want to change the Sequester and lift the budget caps in order to bring the Republicans to the negotiating table with cap in hand to acquiesce to the Democrats' demands.  The Republicans say, "But, the Sequester is the law, and the law is the law and cannot be changed."
Talk about loggerhead hypocrisy.  It's okay to unilaterally change laws so long as it serves the Democrats' interests.  Otherwise, forget it because "the law is the law."
I recently commented to my daughter-in-law who is an attorney and smarter than I am that I could not understand the hypocrisy of the Democrats.  She said, "Not to worry.  If you understood, then you would be one of them."  So, I've quit trying to understand the Democrat liberal mind.