As a legal matter, they will likely be found not to have standing.
Via The Hill:
Donald Trump supporters have filed a lawsuit challenging the eligibility of one of his primary rivals, Sen. Ted Cruz (R-Texas), to run for president.
The lawsuit, filed Feb. 3 at a district court in Alabama, seeks a judgment “declaring that Rafael Edward Cruz is ineligible to qualify/run/seek and be elected to the Office of the President of the United States of America” due to his Canadian birth.
Cruz was born in Calgary, Canada, to an American mother.
Several of the five plaintiffs — Sebastian Green, Shannon Duncan, Kathryn Spears, Kyle Spears and Jerry Parker — are backing Trump in the Republican primary, their attorney, Thomas Drake, told The Hill, although he said others are still undecided.
“The only thing they can agree on is Mr. Cruz is not eligible to be president,” Drake said.
The lawsuit cites Article II, Section 1 of the Constitution, which rules that “no person except a natural born citizen, or a citizen of the United States, at the time of the adoption of this Constitution, shall be eligible to the office of president.”