did the lyndon have any heart conditions?
Yes, he suffered an attack of angina
Lyndon B. Johnson
n March 1970, Johnson suffered an attack of angina and was taken to Brooke Army General Hospital in San Antonio. 
where did the voting rights act of 1965 take place In the United States were there any changes made to this act? UNANSWERABLE who was the head of state when this act was passed? President Lyndon B when did he swear in to his position? 1963 did he have anything to do with regulations on guns? Yes, he signed the Gun Control Act of 1968 what does this act mention? It is a U.S. federal law that regulates the firearms industry and firearms owners what about importing? It created what is known as the "sporting purposes" standard for imported firearms, saying that they must "be generally recognized as particularly suitable for or readily adaptable to sporting purposes, which includes hunting and  organized competitive target shooting, but does not includes  "plinking" or "practical shooting" what is the last mentioned type? Practical shooting, also known as dynamic shooting or action shooting, is a set of shooting sports where the competitors are trying to unite the three principles of precision, power, and speed
wiki:5351614
Lyndon B. Johnson [SEP] Heart issues
In March 1970, Johnson suffered an attack of angina and was taken to Brooke Army General Hospital in San Antonio. He had gained more than since leaving the White House; he now weighed around and was urged to lose considerable weight. He had also resumed smoking after nearly 15 years of not smoking. The following summer, again gripped by chest pains, he lost in less than a month on a crash diet. In April 1972, Johnson had a second heart attack while visiting his daughter, Lynda, in Virginia. "I'm hurting real bad," he confided to friends. The chest pains returned nearly every afternoona series of sharp, jolting pains that left him frightened and breathless.